Media Grid:

Instead of a separate bulk selection mode, persistently show a checkbox for each item. Restores the more familiar bulk actions dropdown + action button.

props ericlewis. see #28842.


Built from https://develop.svn.wordpress.org/trunk@29212


git-svn-id: http://core.svn.wordpress.org/trunk@28996 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix jshint errors introduced in [29212]. see #28842.

Built from https://develop.svn.wordpress.org/trunk@29213


git-svn-id: http://core.svn.wordpress.org/trunk@28997 1a063a9b-81f0-0310-95a4-ce76da25c4cd