Ensure the media library spinner hides when displaying a cached result set. props kovshenin. see #24859.

Built from https://develop.svn.wordpress.org/trunk@27621


git-svn-id: http://core.svn.wordpress.org/trunk@27464 1a063a9b-81f0-0310-95a4-ce76da25c4cd
On attachment pages for audio and video, display players. Currently, only a link is displayed. Add minimal CSS rules for compatibility with 2011, 2012, and 2013 themes.

In `prepend_attachment`, add logic to support attachment types that are not `image`.

In `get_post_class()`, don't add the `has-post-thumbnail` class for attachment pages.

Fixes #27243.


Built from https://develop.svn.wordpress.org/trunk@27622


git-svn-id: http://core.svn.wordpress.org/trunk@27465 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: remove `post_class` filter for `has-post-thumbnail` now that it's added in core for every theme. See #18804.
Built from https://develop.svn.wordpress.org/trunk@27623


git-svn-id: http://core.svn.wordpress.org/trunk@27466 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: revert r27623 `post_class` filter removal since it will visually break pre-WP 3.9 installs. See #18804.
Built from https://develop.svn.wordpress.org/trunk@27624


git-svn-id: http://core.svn.wordpress.org/trunk@27467 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Only enqueue the image editor in the media modal in the admin.

props gcorne.
see #21811.

Built from https://develop.svn.wordpress.org/trunk@27625


git-svn-id: http://core.svn.wordpress.org/trunk@27468 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove "Show" prefix from filter dropdowns, see #26743.
Built from https://develop.svn.wordpress.org/trunk@27626


git-svn-id: http://core.svn.wordpress.org/trunk@27469 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Fourteen: load Masonry after window load event to give more time for widget content to load before drawing the layout. Closes #27051.
Built from https://develop.svn.wordpress.org/trunk@27627


git-svn-id: http://core.svn.wordpress.org/trunk@27470 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Further unify and refine media and view control styling. see #27320.

Built from https://develop.svn.wordpress.org/trunk@27628


git-svn-id: http://core.svn.wordpress.org/trunk@27471 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add the version string to wp-content.css to avoid tenacious caching woes. see #27320.

Built from https://develop.svn.wordpress.org/trunk@27629


git-svn-id: http://core.svn.wordpress.org/trunk@27472 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Avoid an undefined function due to `/wp-admin/includes/dashboard.php` being included too late. props obenland. fixes #27457.

Built from https://develop.svn.wordpress.org/trunk@27630


git-svn-id: http://core.svn.wordpress.org/trunk@27473 1a063a9b-81f0-0310-95a4-ce76da25c4cd