TinyMCE: add outline when a button is focused. Fixes #26931, see #24067.

git-svn-id: http://develop.svn.wordpress.org/trunk@27058 602fd350-edb4-49c9-b593-d223f7449a82
Upgrade MediaElement to 2.13.2 from 2.13.0. For a full list of changes: https://github.com/johndyer/mediaelement/compare/2.13.0...2.13.2

Fixes #26954.



git-svn-id: http://develop.svn.wordpress.org/trunk@27059 602fd350-edb4-49c9-b593-d223f7449a82
TinyMCE: update to 4.0.14. Remove the fix for using init.setup in old plugins, now fixed upstream. See #24067.

git-svn-id: http://develop.svn.wordpress.org/trunk@27060 602fd350-edb4-49c9-b593-d223f7449a82
Update Dashicons to latest. Adds line break, paragraph, code, and bbPress.

props empireoflight, melchoyce.
see #26936.


git-svn-id: http://develop.svn.wordpress.org/trunk@27061 602fd350-edb4-49c9-b593-d223f7449a82
TinyMCE: update to 4.0.16, see #24067.

git-svn-id: http://develop.svn.wordpress.org/trunk@27062 602fd350-edb4-49c9-b593-d223f7449a82
Let the video shortcode accept a YouTube URL as the value of its `src` attribute, as MediaElement.js supports Chromeless YouTube videos by using a pseudo-mime-type `video/youtube`. 

HTTP and HTTPS www, non-www, and short url fronts are supported:
http://www.youtube.com/watch 
https://www.youtube.com/watch
http://youtube.com/watch
https://youtube.com/watch
http://youtu.be
https://youtu.be

Fixes #24764.



git-svn-id: http://develop.svn.wordpress.org/trunk@27063 602fd350-edb4-49c9-b593-d223f7449a82
Remove `$force` argument from `WP_Object_Cache::delete()`. From @nacin: "This was for internal-use-only, I don't think _deprecated_argument() is needed, but let's put a comment somewhere just so we know we'd have to be careful if we ever want to add a third argument here later."

`$force` argument has been removed, and docs were updated.

Fixes #22478.



git-svn-id: http://develop.svn.wordpress.org/trunk@27064 602fd350-edb4-49c9-b593-d223f7449a82
Merge latest from develop.svn.wordpress.org (via upstream)
Merge latest from develop.svn.wordpress.org (via master)