wptexturize: After [28727], leverage RegeEx possessives (++) to improve performance and avoid libpcre segfaults.

Props kovshenin.
Fixes #12690.

Built from https://develop.svn.wordpress.org/trunk@29431


git-svn-id: http://core.svn.wordpress.org/trunk@29209 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Revert [29428] to avoid errors with Add Media for now.

See #29026.

Built from https://develop.svn.wordpress.org/trunk@29432


git-svn-id: http://core.svn.wordpress.org/trunk@29210 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add screen reader text to list table date dropdown.

See #29026.

Built from https://develop.svn.wordpress.org/trunk@29433


git-svn-id: http://core.svn.wordpress.org/trunk@29211 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Create a new Backbone view, `media.view.Label`, which can be used as a subview in things like toolbars, which need screen reader text.

Make an initial instance of it for the label for Bulk Actions in Media Grid.

See #29026.

Built from https://develop.svn.wordpress.org/trunk@29434


git-svn-id: http://core.svn.wordpress.org/trunk@29212 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: add screen reader text in a subview on the toolbar, a `media.view.Label` instance before `media.view.DateFilter`.

See #29026.

Built from https://develop.svn.wordpress.org/trunk@29435


git-svn-id: http://core.svn.wordpress.org/trunk@29213 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Revert styling changes to the Attachment Details modal from [29289]. fixes #28844.

Built from https://develop.svn.wordpress.org/trunk@29436


git-svn-id: http://core.svn.wordpress.org/trunk@29214 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: use a `media.view.Label` instance in the toolbar for the screen reader text for Search.

See #29026.

Built from https://develop.svn.wordpress.org/trunk@29437


git-svn-id: http://core.svn.wordpress.org/trunk@29215 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: 

* Use a `media.view.Label` instance in the toolbar for the screen reader text for the "all" dropdown.
* Adjust the spinner's priority.

Fixes #29026.

Built from https://develop.svn.wordpress.org/trunk@29438


git-svn-id: http://core.svn.wordpress.org/trunk@29216 1a063a9b-81f0-0310-95a4-ce76da25c4cd
JSHint after [29437].


Built from https://develop.svn.wordpress.org/trunk@29439


git-svn-id: http://core.svn.wordpress.org/trunk@29217 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Mark `WP_List_Table::bulk_actions()`'s argument `$which` as optional for BC.

Fixes #29026.

Built from https://develop.svn.wordpress.org/trunk@29440


git-svn-id: http://core.svn.wordpress.org/trunk@29218 1a063a9b-81f0-0310-95a4-ce76da25c4cd
After [29360], add rules for `<input>`s in the scope of `.media-sidebar`.

Props ocean90.
Fixes #28647.

Built from https://develop.svn.wordpress.org/trunk@29441


git-svn-id: http://core.svn.wordpress.org/trunk@29219 1a063a9b-81f0-0310-95a4-ce76da25c4cd
`wp_dashboard_cached_rss_widget()` contained some `func_get_args()` code that was indescribably weird.
This keeps it weird, but makes sure that `$check_urls` gets passed to the callback.

Props michalzuber, ocean90.
Fixes #28872.

Built from https://develop.svn.wordpress.org/trunk@29442


git-svn-id: http://core.svn.wordpress.org/trunk@29220 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: remove Router code that doesn't actually ever run.

See #29121.

Built from https://develop.svn.wordpress.org/trunk@29443


git-svn-id: http://core.svn.wordpress.org/trunk@29221 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: remove Router code that doesn't actually ever run.

See #29121.

Built from https://develop.svn.wordpress.org/trunk@29444


git-svn-id: http://core.svn.wordpress.org/trunk@29222 1a063a9b-81f0-0310-95a4-ce76da25c4cd
4.0-beta3-29445

Built from https://develop.svn.wordpress.org/trunk@29445


git-svn-id: http://core.svn.wordpress.org/trunk@29223 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media: improve the media modal at small screen sizes and make it usable on phones, first run. Part-props gcorne, see #27423.
Built from https://develop.svn.wordpress.org/trunk@29446


git-svn-id: http://core.svn.wordpress.org/trunk@29224 1a063a9b-81f0-0310-95a4-ce76da25c4cd