Widget Customizer: Move style/script registration to script loader. Update Gruntfile.js.

fixes #27356.
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git-svn-id: http://core.svn.wordpress.org/trunk@27368 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove Qik from the oEmbed provider list as it's shutting down. Fixes #27302. Props JustinSainton.
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git-svn-id: http://core.svn.wordpress.org/trunk@27369 1a063a9b-81f0-0310-95a4-ce76da25c4cd
`figcaption` should not be treated as a block-level element by `wpautop()`. See #25646. Props oso96_2000.
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Add MCE Views for audio and video. Please clear your browser cache so that you get the latest TinyMCE stylesheet.

* Move TinyMCE shortcode handling from `wpgallery` plugin to `mce-view.js`
* Force `preload="none"` when rendering media in the editor to ensure fast loading (I realize this sounds illogical)
* Move audio and video tag builder logic in `media-template.php` into PHP funcs that can be reused by any code passing `data.model` to an Underscore template
* Pause all players when moving between editor tabs and when moving from the editor to editing in the media modal.
* Rename `wp.media.audio|video.shortcode()` to the more appropriate `wp.media.audio|video.update()` that now returns a `wp.shortcode` object instead of a string.
* Add necessary MediaElement css files to `$mce_css`
* In `wp.mce.View.render()`, support multiple instances of the same shortcode
* When rendering `wp.mce.View`s, fire a ready event that passes the current MCE View root element as context 

See #27389.


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git-svn-id: http://core.svn.wordpress.org/trunk@27371 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Version bump for TinyMCE stylesheet.

See #27389, [27528].


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Revert [27528] until Flash in Firefox behaves :(

See #27389.


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Drag/drop upload: don't trigger on "local" dragging, hide the overlay on click. Props kovshenin, fixes #19845
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