Commit Graph

35449 Commits

Author SHA1 Message Date
Gary Pendergast
6b4357e14b REST API: Deprecate the rest_enabled filter.
As the REST API becomes more integral to WordPress Core, turning it off will cause a... suboptimal experience. If we don't want it to be turned off, the off switch needs to be removed.

Props jorbin, pento.
Fixes #38446.


Built from https://develop.svn.wordpress.org/trunk@38947


git-svn-id: http://core.svn.wordpress.org/trunk@38890 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-26 06:28:30 +00:00
Andrew Ozz
11e7d3d250 TinyMCE: revert removing the numbers (2-6) after the headings in the drop-down. Seems it causes more confusion.
See #27159.
Built from https://develop.svn.wordpress.org/trunk@38946


git-svn-id: http://core.svn.wordpress.org/trunk@38889 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-26 06:16:30 +00:00
Gary Pendergast
a91a41c10c Tests: Fix some query typos introduced in [38940].
Props piewp for the catch.
See #35272.


Built from https://develop.svn.wordpress.org/trunk@38945


git-svn-id: http://core.svn.wordpress.org/trunk@38888 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-26 05:49:44 +00:00
Gary Pendergast
9ff54f214f General: Add a sanitize_textarea_field() function.
Like its predecessor (`sanitize_text_field()`), `sanitize_textarea_field()` is a helper function to sanitise user input. As the name suggests, this function is for sanitising input from `textarea` fields - it strips tags and invalid UTF-8 characters, like `sanitize_text_field()`, but retains newlines and extra inline whitespace.

Props ottok, nbachiyski, chriscct7, pento.
Fixes #32257.


Built from https://develop.svn.wordpress.org/trunk@38944


git-svn-id: http://core.svn.wordpress.org/trunk@38887 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-26 05:17:35 +00:00
Jeremy Felt
555466ab82 Multisite: Replace get_blog_details() in inline documentation.
Some documentation is now out of date and some can be replaced with a mention of `get_site()`.

Fixes #37102.

Built from https://develop.svn.wordpress.org/trunk@38943


git-svn-id: http://core.svn.wordpress.org/trunk@38886 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-26 03:39:29 +00:00
Rachel Baker
b13da6ae73 REST API: Add missing sanitization callback for the hide_empty parameter of the Terms Controller.
Fixes a bug where the boolean parameter `hide_empty` was not being properly sanitized in the Terms controller.

Props websupporter.
Fixes #38465.
Built from https://develop.svn.wordpress.org/trunk@38942


git-svn-id: http://core.svn.wordpress.org/trunk@38885 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-26 02:29:30 +00:00
Boone Gorges
50e4ab375d Tests: Share fixtures in term endpoint tests.
See #30017.
Built from https://develop.svn.wordpress.org/trunk@38941


git-svn-id: http://core.svn.wordpress.org/trunk@38884 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-26 01:59:30 +00:00
Gary Pendergast
fe86e61f0b Menus: Add the menu-item-home class to the static front page item.
When a site is using a static front page, and that page is in a menu, it isn't given the CSS class `menu-item-home`, contrary to the developer documentation.

An incorrect solution was originally added in [35272], and is now gone. Let us never speak of it again.

Props mdgl, adamsilverstein, welcher, pento.
Fixes #35272.


Built from https://develop.svn.wordpress.org/trunk@38940


git-svn-id: http://core.svn.wordpress.org/trunk@38883 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-26 01:58:30 +00:00
Andrew Ozz
ed2e427b9d TinyMCE: remove the numbers (2-6) after the headings in the drop-down. These are previews for the actual styling of headings in the editor.
See #27159.
Built from https://develop.svn.wordpress.org/trunk@38939


git-svn-id: http://core.svn.wordpress.org/trunk@38882 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-26 01:42:48 +00:00
John Blackbourn
b4db9fbe3d Build/Test Tools: Continue eliminating randomness in tests.
See #37371

Built from https://develop.svn.wordpress.org/trunk@38938


git-svn-id: http://core.svn.wordpress.org/trunk@38881 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-26 01:24:43 +00:00
Andrew Ozz
5dda286548 TinyMCE: adjust the shortcuts position and font size in the Formats drop-down to better match the shortcuts in the buttons tooltips.
See #38063.
Built from https://develop.svn.wordpress.org/trunk@38937


git-svn-id: http://core.svn.wordpress.org/trunk@38880 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-26 00:37:30 +00:00
Jeremy Felt
a545afb331 Multisite: Deprecate the blog_details filter.
`get_site()` has replaced `get_blog_details()` throughout core and is the recommended way to retrieve a current or single site object.

The `blog_details` filter is applied when full details are requested from `get_blog_details()`.

To ensure backwards compatibility in the switch to `get_site()`, this `blog_details` filter is now applied in `WP_Site::get_details()` and marked as deprecated with a note to rely instead on the `site_details` filter introduced in 4.6.

Props flixos90.
See #37102.
Fixes #38491.

Built from https://develop.svn.wordpress.org/trunk@38936


git-svn-id: http://core.svn.wordpress.org/trunk@38879 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 23:44:30 +00:00
Jeremy Felt
78fc0386af Multisite: Use get_site() in tests where get_blog_details() is not tested.
Remaining tests either rely on the `blog-details` cache key or test `get_blog_details()` itself.

Props flixos90.
Fixes #38497.

Built from https://develop.svn.wordpress.org/trunk@38935


git-svn-id: http://core.svn.wordpress.org/trunk@38878 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 23:04:30 +00:00
Jeremy Felt
a4e98f7cb9 Multisite: Replace get_blog_details() in wp_xmlrpc_server::_multisite_getUsersBlogs().
Use `get_site()` instead.

Props flixos90.
Fixes #38350.

Built from https://develop.svn.wordpress.org/trunk@38934


git-svn-id: http://core.svn.wordpress.org/trunk@38877 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 22:54:35 +00:00
Weston Ruter
02ce8db6de Customize: Add explanatory note for custom_css control via textarea[placeholder] and expose any defined input_attrs on such textarea controls.
Props melchoyce, westonruter, celloexpressions.
See #37439.
Fixes #38493.

Built from https://develop.svn.wordpress.org/trunk@38933


git-svn-id: http://core.svn.wordpress.org/trunk@38876 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 22:52:10 +00:00
Andrew Ozz
e1ae827577 TinyMCE: remove and rearrange some of the editor buttons to improve user experience.
Props hugobaeta, melchoyce, celloexpressions, mor10, iseulde, mrwweb.
See #27159.
Built from https://develop.svn.wordpress.org/trunk@38932


git-svn-id: http://core.svn.wordpress.org/trunk@38875 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 22:51:36 +00:00
Weston Ruter
8d1cb3068a Customize: Add hue-only mode to color picker.
The color control in the customizer can use the new mode by supplying the `mode` param with `hue` (as opposed to the new default `full` value). New control replaces the `range` control in Twenty Seventeen for `colorscheme_hue`. The `wpColorPicker` can opt for hue-only mode via supplying `hue` as the `type` option. Iris Color Picker is updated from v1.0.7 to v1.1.0-beta.

Props mattwiebe, celloexpressions.
Fixes #38263.

Built from https://develop.svn.wordpress.org/trunk@38931


git-svn-id: http://core.svn.wordpress.org/trunk@38874 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 22:33:30 +00:00
Dominik Schilling
e048613585 Tests: Update language files to include a Language header.
See #26511.
Built from https://develop.svn.wordpress.org/trunk@38930


git-svn-id: http://core.svn.wordpress.org/trunk@38873 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 22:26:29 +00:00
John Blackbourn
1e6a12db38 Feeds: Don't attempt to generate RSS feeds for invalid feed URLs such as wp-content/feed.
Props stevenkword, JRGould, lyubomir_popov, johnbillion
Fixes #30210

Built from https://develop.svn.wordpress.org/trunk@38929


git-svn-id: http://core.svn.wordpress.org/trunk@38872 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 21:54:31 +00:00
Dominik Schilling
7cce73a634 General: Introduce a wp_list_sort() helper function, v2.
In addition to `wp_list_filter()` for filtering a list of objects, and `wp_list_pluck()` for plucking a certain field out of each object in a list, this new function can be used for sorting a list of objects by specific fields. These functions are now all contained within the new `WP_List_Util()` class and `wp_list_sort()` is used in various parts of core for sorting lists.

This was previously committed in [38859] but got reverted in [38862] and [38863]. To fix the previous issues, `wp_list_sort()` supports now an additional argument to preserve array keys via `uasort()`.

Props flixos90, DrewAPicture, jorbin.
Fixes #37128.
Built from https://develop.svn.wordpress.org/trunk@38928


git-svn-id: http://core.svn.wordpress.org/trunk@38871 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 21:26:32 +00:00
John Blackbourn
d151e08aa6 Feeds: Greatly reduce the number of dummy posts that are generated for the Atom tests, following on from [38924].
See #35160

Built from https://develop.svn.wordpress.org/trunk@38927


git-svn-id: http://core.svn.wordpress.org/trunk@38870 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 20:59:30 +00:00
Weston Ruter
54465a68db Customize: Fix logic inversion in determining whether a URL is previewable which prevented previewing anything but homepage.
Fixes regression introduced in [38890].

See #38409.
Fixes #38492.

Built from https://develop.svn.wordpress.org/trunk@38926


git-svn-id: http://core.svn.wordpress.org/trunk@38869 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 20:53:29 +00:00
Rachel Baker
2f263fce99 Feeds: Always return a valid timestamp for the Last-Modified header of comment or post feeds.
Fixes bug where an invalid Last-Modified value would be returned in feed requests for sites that had 0 items to return. Comment or post feeds will now return the current timestamp as the Last-Modified header value.  Example: a request for the comments feed for a site without any comments.

Replaced use of the local static variable `$cache_lastcommentmodified` to store the modified date in `get_lastcommentmodified()` with the Object Cache API.  The `get_lastcommentmodified()` function returns early if there is a cached value and returns `false` if there where no comments found. Introduced `_clear_modified_cache_on_transition_comment_status()` to flush the `lastcommentmodified` cache key when a comment enters or leaves approval status. In `get_lastpostmodified()` return early if there is a cached value and return `false` if there are no posts found.

Props swissspidy, rachelbaker, dllh, leobaiano.
Fixes #38027.
Built from https://develop.svn.wordpress.org/trunk@38925


git-svn-id: http://core.svn.wordpress.org/trunk@38868 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 20:48:29 +00:00
John Blackbourn
92dfd29aee Feeds: Greatly reduce the number of dummy posts that are generated for the RSS2 tests. This speeds the tests up.
See #35160, #30210

Built from https://develop.svn.wordpress.org/trunk@38924


git-svn-id: http://core.svn.wordpress.org/trunk@38867 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 20:17:37 +00:00
Dominik Schilling
c40eadefb2 Embeds: Realign the provider list after [38693].
See #38003.
Built from https://develop.svn.wordpress.org/trunk@38923


git-svn-id: http://core.svn.wordpress.org/trunk@38866 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 20:16:56 +00:00
Dominik Schilling
1159185401 Upgrade: Realign $_new_bundled_files after [38921].
Built from https://develop.svn.wordpress.org/trunk@38922


git-svn-id: http://core.svn.wordpress.org/trunk@38865 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 20:04:31 +00:00
Dominik Schilling
6e08d8303d Upgrade: Add Twenty Seventeen to $_new_bundled_files.
This indicates that Twenty Seventeen should be installed with a WordPress upgrade.

See #38372.
Built from https://develop.svn.wordpress.org/trunk@38921


git-svn-id: http://core.svn.wordpress.org/trunk@38864 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 20:03:03 +00:00
Dominik Schilling
3db5fa6c90 Nav Menus: Update help text to include the two latest default themes, Twenty Sixteen and Twenty Seventeen.
See #38372.
Built from https://develop.svn.wordpress.org/trunk@38920


git-svn-id: http://core.svn.wordpress.org/trunk@38863 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 20:02:32 +00:00
Dominik Schilling
652742bf0a Install: Update sidebars_widgets option for Twenty Seventeen to match its three sidebars.
See #38372.
Built from https://develop.svn.wordpress.org/trunk@38919


git-svn-id: http://core.svn.wordpress.org/trunk@38862 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 20:01:13 +00:00
David A. Kennedy
df7e53707e Twenty Seventeen: Refresh color patterns for changes in style.css
This brings the custom colors CSS in line with the stylesheet. Some selectors were missing since many changes occurred in `style.css` a few days before the original merge to Core.

Props celloexpressions, laurelfulford.

Fixes #38389.

Built from https://develop.svn.wordpress.org/trunk@38918


git-svn-id: http://core.svn.wordpress.org/trunk@38861 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 20:00:42 +00:00
Jeremy Felt
5981dd3107 REST API: Adjust test_get_items_invalid_status_param_is_discarded() after [38911].
Previously, if an invalid post status was assigned to a media object, the object would be returned with an unchanged status. After [38911], an error response is returned.

The assertion in test_get_items_invalid_status_param_is_discarded() needs to be updated to account for the expected error response. The test name has been changed to `test_get_items_invalid_status_param_is_error_response()`.

Fixes #38417.

Built from https://develop.svn.wordpress.org/trunk@38917


git-svn-id: http://core.svn.wordpress.org/trunk@38860 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 19:34:30 +00:00
Jeremy Felt
8972cb70b6 Options: Make $passed_default available in remaining default_option_{$option} filter.
Pass `false` as the `$passed_default` value when the `default_option_{$option}` filter is applied in `update_option` as no default is ever passed.

This resolves an error in tests where the 3rd parameter is not available to `filter_default_option()`.

Fixes #38176.

Built from https://develop.svn.wordpress.org/trunk@38916


git-svn-id: http://core.svn.wordpress.org/trunk@38859 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 19:23:32 +00:00
Jeremy Felt
680f14fcd1 Multisite: Replace get_blog_details() in wp-includes/ms-blogs.php with get_site().
Props flixos90.
See #37102.
Fixes #38351.

Built from https://develop.svn.wordpress.org/trunk@38915


git-svn-id: http://core.svn.wordpress.org/trunk@38858 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 18:50:30 +00:00
Jeremy Felt
84f25462e1 Multisite: Replace get_blog_details() in get_active_blog_for_user() with get_site().
Props flixos90.
Fixes #38355.

Built from https://develop.svn.wordpress.org/trunk@38914


git-svn-id: http://core.svn.wordpress.org/trunk@38857 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 18:06:29 +00:00
Jeremy Felt
4c0d82d653 Multisite: Introduce tests for get_active_blog_for_user().
Props flixos90.
See #38355.

Built from https://develop.svn.wordpress.org/trunk@38913


git-svn-id: http://core.svn.wordpress.org/trunk@38856 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 18:03:29 +00:00
Andrea Fercia
48b12e9dd6 Menus: Improve the HTML semantics of the "Menu Settings" section.
- removes the previous markup based on a definition list
- groups checkboxes in `fieldset` elements with a `legend`
- simplifies the CSS lowering selectors specificity

Props xavortm.

Fixes #38023.

Built from https://develop.svn.wordpress.org/trunk@38912


git-svn-id: http://core.svn.wordpress.org/trunk@38855 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 17:29:30 +00:00
Joe Hoyle
e8a311ed02 REST API: Validate posts status enum
Currently we are using a different validate callback, so the `enum` is not interpretted. We just have to fallback to the result of `rest_validate_request_arg` in our custom wrapper function.

Fixes #38417.

Built from https://develop.svn.wordpress.org/trunk@38911


git-svn-id: http://core.svn.wordpress.org/trunk@38854 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 17:13:28 +00:00
Joe Hoyle
5f777155f2 Options: Add 'default' to register_setting
Add a `default` argument to `register_setting` that will be used an the default option value viet `get_option()` in the event of no other option being specified. This means (if chosen) developers can define their default once via `register_option` and not have to duplicate the value every time they make a call to `get_option()`.

Props rmccue, jorbin, jtsternberg.
Fixes #38176.

Built from https://develop.svn.wordpress.org/trunk@38910


git-svn-id: http://core.svn.wordpress.org/trunk@38853 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 17:08:29 +00:00
Tammie Lister
67dbadd476 Twenty Seventeen: Display scroll down arrow when no menu
This improves scrollability without a menu.

Props nnaimov, melchoyce, davidakennedy
Fixes #38392


Built from https://develop.svn.wordpress.org/trunk@38909


git-svn-id: http://core.svn.wordpress.org/trunk@38852 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 16:51:35 +00:00
Gary Pendergast
a62d04afd6 Tests: Fix a PHP notice introduced in [38907].
`WP_DEFAULT_THEME` was being defined in the wrong location.

Also, if WordPress has the original "default" theme installed, ensure that our test theme overrides it.

Props swissspidy for daring to dive into Themes of WordPress Past.
See #31550, #38457.


Built from https://develop.svn.wordpress.org/trunk@38908


git-svn-id: http://core.svn.wordpress.org/trunk@38851 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 11:06:30 +00:00
Gary Pendergast
3ce2dd4131 Tests: Use a minimal theme for tests.
This functionality was originally added in [38858], using `symlink()` to put a link to the theme in WordPress' `themes` directory. Unfortunately, not all installs have write access to the `themes` directory, causing unit tests to fail.

The new method is to add the test theme directory to `$wp_theme_directories`, and fix the handful of tests that don't expect `$wp_theme_directories` to have multiple entries.

The test install/bootstrap routines now also check that `WP_DEFAULT_THEME` is defined, in case the tests are being run on a system that hasn't upgraded its' `wp-tests-config.php`.

See #31550.
Fixes #38457.


Built from https://develop.svn.wordpress.org/trunk@38907


git-svn-id: http://core.svn.wordpress.org/trunk@38850 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 10:25:53 +00:00
Weston Ruter
30a71555cb Customize: Allow page stubs to be created via dropdown-pages controls in the Static Front Page section.
This ability was previously added to nav menus via the available page items panel. The "Add New Page" button only appears when the `allow_addition` control param is supplied as `true`. Code is adapted from the Customize Posts feature plugin.

Props celloexpressions, westonruter.
See #38013, #34923.
Fixes #38164.

Built from https://develop.svn.wordpress.org/trunk@38906


git-svn-id: http://core.svn.wordpress.org/trunk@38849 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 06:31:31 +00:00
Jeremy Felt
6a0ca394e8 Multisite: Replace get_blog_details() with get_site() in is_user_member_of_blog().
Props flixos90.
Fixes #38358.

Built from https://develop.svn.wordpress.org/trunk@38905


git-svn-id: http://core.svn.wordpress.org/trunk@38848 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 06:02:35 +00:00
Jeremy Felt
6e1c166dfb Multisite: Replace get_blog_details() in ms_site_check() with get_site().
Props flixos90.
Fixes #38357.

Built from https://develop.svn.wordpress.org/trunk@38904


git-svn-id: http://core.svn.wordpress.org/trunk@38847 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 05:55:30 +00:00
Jeremy Felt
390dc4b345 Multisite: Replace get_blog_details() in add_user_to_blog() with get_site().
Adds tests for `add_user_to_blog()`.

Props flixos90.
Fixes #38356.

Built from https://develop.svn.wordpress.org/trunk@38903


git-svn-id: http://core.svn.wordpress.org/trunk@38846 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 05:49:29 +00:00
Jeremy Felt
749b480de0 Multisite: Replace get_blog_details() with get_site() in get_dashboard_blog().
Props dipesh.kakadiya.
Fixes #38353.

Built from https://develop.svn.wordpress.org/trunk@38902


git-svn-id: http://core.svn.wordpress.org/trunk@38845 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 05:05:33 +00:00
Weston Ruter
afe90360b5 Customize: Prevent absent site icon link from outputting an empty string as href in customizer; use /favicon.ico as fallback.
An empty string causes some browsers to use the current URL as the `href`. When using `history.replaceState()` Chrome will re-fetch the favicon with each call, meaning that `customize.php` gets hit with wasted requests which tax the server.

Fixes #38377.

Built from https://develop.svn.wordpress.org/trunk@38901


git-svn-id: http://core.svn.wordpress.org/trunk@38844 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 04:47:29 +00:00
Weston Ruter
a1777db166 Customize: Skip attaching expansion event handlers to section containers with the cannot-expand class.
Props kkoppenhaver, celloexpressions.
Fixes #37980.

Built from https://develop.svn.wordpress.org/trunk@38900


git-svn-id: http://core.svn.wordpress.org/trunk@38843 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 04:36:39 +00:00
Dion Hulse
0314e29667 Drop the requirement for the entry points to WordPress to be parsable by PHP4.
Previously we ensured that the entry points to WordPress were parsable by PHP4 in order to display a friendly not-supported-php error message.
However, for the last two years the main entry points have not actually parsed, and we've only added extra parse errors since it last worked in 3.9, so it's time we just remove this 'feature'.
The PHP version checks are still there for PHP 5.0/5.1, and so it's inplace when we eventually drop PHP 5.2 support.

See #29489.

Built from https://develop.svn.wordpress.org/trunk@38899


git-svn-id: http://core.svn.wordpress.org/trunk@38842 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 03:15:30 +00:00
Dion Hulse
2b788037c7 Upgrade: Don't fail a core update just because readme.html or license.txt couldn't be modified.
A number of locked down installs remove `readme.html` or make it inaccessible which would result in an update failure.

Props polevaultweb for the initial patch.
Fixes #31420.

Built from https://develop.svn.wordpress.org/trunk@38898


git-svn-id: http://core.svn.wordpress.org/trunk@38841 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2016-10-25 02:24:31 +00:00