* Add missing translators comments.
* Fix placement of some translators comments.
Translators comments should be on the line directly above the line containing the translation function call for optimal compatibility with various `.pot` file generation tools.
The CS auto-fixing, which changed some inconsistent function calls to multi-line function calls, is part of the reason why this was no longer the case for a select group of translators comments.
Includes minor code layout fixes.
Patch `44360-wp-admin-includes-dir.patch` of the series.
Props flipkeijzer, alvarogois, michielatyoast
See #44360
Built from https://develop.svn.wordpress.org/trunk@43598
git-svn-id: http://core.svn.wordpress.org/trunk@43427 1a063a9b-81f0-0310-95a4-ce76da25c4cd
