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