After [29543], the iframe sandboxes for media need to load Open Sans. Playlists look aggressively bad without it. Adds font styles for the body.

See #29048.

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git-svn-id: http://core.svn.wordpress.org/trunk@29338 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: don't auto-select attachments upon upload.

Props ocean90.
See #28842.

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git-svn-id: http://core.svn.wordpress.org/trunk@29339 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: after completing a Bulk action, switch from `select` to `edit` mode.

Fixes #28842.

Built from https://develop.svn.wordpress.org/trunk@29566


git-svn-id: http://core.svn.wordpress.org/trunk@29340 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: don't hide the uploader progress bar for individual items.

See [29527], #29037.

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git-svn-id: http://core.svn.wordpress.org/trunk@29341 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: after [29566], account for Trash and Delete.

See #28842.

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git-svn-id: http://core.svn.wordpress.org/trunk@29342 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Introduce plugin icons in the installer.

See http://wp.me/p2AvED-2P8 for the announcement and how to implement these.

props tellyworth.
see #28785.

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git-svn-id: http://core.svn.wordpress.org/trunk@29343 1a063a9b-81f0-0310-95a4-ce76da25c4cd
TinyMCE: update to 4.1.4. Changelog: http://www.tinymce.com/develop/changelog/?type=tinymce. Fixes #29310
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git-svn-id: http://core.svn.wordpress.org/trunk@29344 1a063a9b-81f0-0310-95a4-ce76da25c4cd
TinyMCE wpView: prevent errors when pasting multiple non-embeddable URLs, props avryl, fixes #29268
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git-svn-id: http://core.svn.wordpress.org/trunk@29345 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Autosave: prevent setting multiple stale `wp-saving-post-*` cookies when the browser disregards "session cookies" expiration on quit:
- Add expiration time of 24 hours for these cookies.
- Rename them to `wp-saving-post` (no post_id) so there is never more than one cookie per domain.
Fixes #29294.
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git-svn-id: http://core.svn.wordpress.org/trunk@29346 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Export: Add wxr_export_skip_commentmeta filter to match the _postmeta filter.

props cfinke.
fixes #28745.

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git-svn-id: http://core.svn.wordpress.org/trunk@29347 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Plugin compatibility warnings should be red, not green.

props avryl.
fixes #29309.
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git-svn-id: http://core.svn.wordpress.org/trunk@29348 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix unintended box-shadow in the opposite corner of thickbox Close icon.

props ocean90.
fixes #29311.
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git-svn-id: http://core.svn.wordpress.org/trunk@29349 1a063a9b-81f0-0310-95a4-ce76da25c4cd
TinyMCE: update to 4.1.4-20140822. Changes:
- Fixed bug where sometimes the resize rectangles wouldn't properly render on images on WebKit/Blink. https://github.com/tinymce/tinymce/commit/9a2d01cc141f71de33c689e19baf026d20cc67be
- Fixed nodeChanged selection issue where the image selection wouldn't be removed if you clicked right after/before it. https://github.com/tinymce/tinymce/commit/dd729c67e066d346f5a4140fa3b4b94f51a235e8
- Fixed bug in list plugin where delete/backspace would merge empty LI elements in lists incorrectly. https://github.com/tinymce/tinymce/commit/caadfb05dd8b9b8dc7b76525188891d5ab47c5ee
See #29310
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git-svn-id: http://core.svn.wordpress.org/trunk@29350 1a063a9b-81f0-0310-95a4-ce76da25c4cd
TinyMCE wpView: fix showing errors for non-embeddable URLs, no-ssl or no items. Props avryl, fixes #29114, see #29268.
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git-svn-id: http://core.svn.wordpress.org/trunk@29351 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix a couple of misplaced/misordered argument descriptions in the `WP_Query` arguments hash notation.

See #25367.

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git-svn-id: http://core.svn.wordpress.org/trunk@29352 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Editor scrolling: 
- Pin the TinyMCE statusbar (elements path) to the bottom.
- Add support for pinning the menu when present.
- Add borders from CSS.
- Optimize getting most elements outerHeight.
Part props avryl, fixes #29293, see #28328.
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git-svn-id: http://core.svn.wordpress.org/trunk@29353 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add missing array keys for connection type in `request_filesystem_credentials()`.

see [28456].
fixes #29347.

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git-svn-id: http://core.svn.wordpress.org/trunk@29354 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Plugin compatibility is based on your version of WordPress, not your install.

fixes #29313.
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git-svn-id: http://core.svn.wordpress.org/trunk@29355 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media: Only fire keyboard events for the Attachments view once.

Firing them twice was breaking arrow key navigation in media attachment grids.

props gcorne.
fixes #29304.

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git-svn-id: http://core.svn.wordpress.org/trunk@29356 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Apply accessibility improvements to Plugins screen too.

props SergeyBiryukov.
fixes #29342.
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git-svn-id: http://core.svn.wordpress.org/trunk@29357 1a063a9b-81f0-0310-95a4-ce76da25c4cd