Media Grid: Screen Options for grid have to play nice with Screen Options for list. This was fun.

See #24716.

Built from https://develop.svn.wordpress.org/trunk@29078


git-svn-id: http://core.svn.wordpress.org/trunk@28864 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: make registering Screen Options for non-list tables more generic.

See #24716.

Built from https://develop.svn.wordpress.org/trunk@29079


git-svn-id: http://core.svn.wordpress.org/trunk@28865 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: JSHint.

See #24716.


Built from https://develop.svn.wordpress.org/trunk@29080


git-svn-id: http://core.svn.wordpress.org/trunk@28866 1a063a9b-81f0-0310-95a4-ce76da25c4cd