Background Updates: Record Plugin & Theme update statistics like we for for Core updates, Pass Plugin/Theme update objects into the Background updater for consistency with Core & Translations. See #27633

Built from https://develop.svn.wordpress.org/trunk@27905


git-svn-id: http://core.svn.wordpress.org/trunk@27736 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Background Updates: Fix two variable typos in r27905

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git-svn-id: http://core.svn.wordpress.org/trunk@27737 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Widget Customizer: Improve plugin compatibility.

Some plugins are using custom scripts and styles for there widgets. These are available on the Widgets screens, but not in the Customizer yet.
Scripts and styles can be enqueued via: 
* `admin_enqueue_scripts`
* `admin_print_scripts` and `admin_print_scripts-widgets.php`
* `admin_print_styles` and `admin_print_styles-widgets.php`
* `admin_print_footer_scripts` and `admin_footer-widgets.php`
All this hooks are now called in the Customizer too.

Previously we have add the `#widgets-right` ID to a container div via jQuery. Remember: `#widgets-right` exists on the Widgets screen and is used by many plugins to do event delegation from that element.
But since our script files are loaded in the footer, the JavaScript way is a bit late for some plugins.
We have decided to add a `div#widgets-right` container element to customizer. "Less hacky hack."

props westonruter, ocean90. Thanks dpe415 for testing.
fixes #27619.
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git-svn-id: http://core.svn.wordpress.org/trunk@27738 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix a regression caused by [27622] in `prepend_attachment()` by passing all attachments that are not audio or video to the `else` clause.

Fixes #27634.


Built from https://develop.svn.wordpress.org/trunk@27908


git-svn-id: http://core.svn.wordpress.org/trunk@27739 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Widget Customizer: Improve support for dynamically-created inputs.

* Re-work how and when widget forms get updated.
* Replace ad hoc hooks system with jQuery events,
* Add `widget-updated`/`widget-synced` events for widget soft/hard updates.
* Enter into a non-live form update mode, where the Apply button is restored when a sanitized form does not have the same fields as currently in the form, and so the fields cannot be easily updated to their sanitized values without doing a complete form replacement. Also restores live update mode if sanitized fields are aligned with the existing fields again.

Note: jQuery events are *not* final yet, see #19675.

props westonruter.
see #27491.
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git-svn-id: http://core.svn.wordpress.org/trunk@27740 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Widget Customizer: Remove leading underscores from public methods.

Fix also an incorrect hook name in `stop_capturing_option_updates()`.

props DrewAPicture.
see #27534.
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git-svn-id: http://core.svn.wordpress.org/trunk@27741 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Update suggest.min.js for [26333].

see #26110, #27599.
fixes #27621.
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git-svn-id: http://core.svn.wordpress.org/trunk@27742 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Widget Customizer: Don't use opacity for the update spinner.

`opacity` isn't supported in IE8 and makes the spinner always visible.

see #27485.
Built from https://develop.svn.wordpress.org/trunk@27912


git-svn-id: http://core.svn.wordpress.org/trunk@27743 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Widget Customizer: Restore deferral of `previewer-loading` class removal until preview is synced.

props westonruter.
fixes #27635.
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git-svn-id: http://core.svn.wordpress.org/trunk@27744 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove <br> elements for HTML5 galleries.

props obenland.
fixes #27637, see #26697.

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git-svn-id: http://core.svn.wordpress.org/trunk@27745 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove old links_recently_updated_* DB options that never had a UI.

fixes #27649.

Built from https://develop.svn.wordpress.org/trunk@27916


git-svn-id: http://core.svn.wordpress.org/trunk@27746 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Edit Image modal:
- Fix issue with adding a link to an image that didn't have one previously.
- Adjust the look-and-feel of the advance options toggle so that it becomes a section heading that can be open/closed.
- Add a Custom Size option to the size drop-down that reveals fields for soft-resizing the image inserted into the post.
Props gcorne, and props sdasse for the design help, see #27366
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git-svn-id: http://core.svn.wordpress.org/trunk@27748 1a063a9b-81f0-0310-95a4-ce76da25c4cd
TinyMCE:
- Bring back loading of /langs/[locale].js and /langs/[locale]_dlg.js from PHP. Prevents errors with missing translation files when custom plugins use requireLangPack() without second argument.
- Back to using ISO 639-1 (two letter) locales as the locale is used as part of the translation file name.
See #24067, fixes #27610
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git-svn-id: http://core.svn.wordpress.org/trunk@27752 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Database: Add $allow_bail argument to wpdb::check_connection() to match the connect method.

props DrProtocols, pento.
fixes #27240.

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git-svn-id: http://core.svn.wordpress.org/trunk@27755 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Thirteen and Fourteen: style to support the new HTML5 line-break-less galleries. Props obenland, see #27637.
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git-svn-id: http://core.svn.wordpress.org/trunk@27756 1a063a9b-81f0-0310-95a4-ce76da25c4cd
TinyMCE: update translatable strings, see #27453, #24067
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git-svn-id: http://core.svn.wordpress.org/trunk@27757 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Background Updates: Fix a PHP Warning caused by a Upgrader instance being passed into the Theme & Plugin $extra_stats parameter. See #27633

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git-svn-id: http://core.svn.wordpress.org/trunk@27758 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use multiplication sign instead of a colon for selection size when editing an image.

props siobhan.
fixes #27652.
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git-svn-id: http://core.svn.wordpress.org/trunk@27761 1a063a9b-81f0-0310-95a4-ce76da25c4cd