Often, folks run into two issues when they create new menus: they click "Add a Menu" thinking it will add a new page to their menu, or they forget to assign their new menu to a location, and then wonder why it doesn't show up on their site.
This commit rearranges the order of items in the menu panel, and updates the flow for creating a menu by breaking it up into steps. Additionally, more help text has been added to guide people through the process of creating a menu.
Also adds default `type` lookups for Panel and Section instances. See #30741.
Props bpayton, obenland, westonruter, celloexpessions, afercia, melchoyce, zoonini, michelleweber.
Fixes#40104.
Built from https://develop.svn.wordpress.org/trunk@41768
git-svn-id: http://core.svn.wordpress.org/trunk@41602 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Prior to about 2013, many class methods lacked even access modifiers which made the `@access` notations that much more useful. Now that we've gotten to a point where the codebase is more mature from a maintenance perspective and we can finally remove these notations. Notable exceptions to this change include standalone functions notated as private as well as some classes still considered to represent "private" APIs.
See #41452.
Built from https://develop.svn.wordpress.org/trunk@41162
git-svn-id: http://core.svn.wordpress.org/trunk@41002 1a063a9b-81f0-0310-95a4-ce76da25c4cd
