Admin Menu: Center menu images vertically, see #26630.
Built from https://develop.svn.wordpress.org/trunk@27410


git-svn-id: http://core.svn.wordpress.org/trunk@27257 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add TinyMCE placeholders for `audio` and `video` shortcodes.

* Add `wp.media.mixin`.
* Add `wp.media.audio` and `wp.media.video`.
* Add `wp.media.model.PostAudio` and `wp.media.model.PostVideo`
* Add `wp.media.controller.AudioDetails` and `wp.media.controller.VideoDetails`.
* Add `wp.media.controller.ReplaceAudio` and `wp.media.controller.ReplaceVideo`.
* Add `wp.media.view.MediaFrame.AudioDetails` and `wp.media.view.MediaFrame.VideoDetails`.
* Add `wp.media.view.AudioDetails` and `wp.media.view.VideoDetails`.
* Update the `wpgallery` TinyMCE plugin.
* Display audio and video players in the media modal when shortcode is clicked.
* Provide a UI to edit shortcode attributes in the media modal.
* Provide a UI to replace the `src` media file in an `audio` or `video` shortcode.

See #27016.


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git-svn-id: http://core.svn.wordpress.org/trunk@27258 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add context and a missing period to widget descriptions. Fixes #26668. Props pavelevap, Hanni
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git-svn-id: http://core.svn.wordpress.org/trunk@27259 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix bulk activation of network-only plugins. Fixes #26487. Props dd32.
Built from https://develop.svn.wordpress.org/trunk@27413


git-svn-id: http://core.svn.wordpress.org/trunk@27260 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Audio doesn't have the same quirks as video in the media modal. We don't have to aggressively destroy the `mejs` instance.

See #27016.


Built from https://develop.svn.wordpress.org/trunk@27414


git-svn-id: http://core.svn.wordpress.org/trunk@27261 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add some missing JSDoc blocks to media-related code.

See #27016.


Built from https://develop.svn.wordpress.org/trunk@27415


git-svn-id: http://core.svn.wordpress.org/trunk@27262 1a063a9b-81f0-0310-95a4-ce76da25c4cd