Revisions: Explicitly set the 'from' handle position when switching from two-handled mode back to single-handled mode.

props adamsilverstein.
fixes #26793.
Built from https://develop.svn.wordpress.org/trunk@29052


git-svn-id: http://core.svn.wordpress.org/trunk@28840 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use a more generic selector for image editor in media modal styling so that the Media Grid modal also gets it. see #24716.

Built from https://develop.svn.wordpress.org/trunk@29053


git-svn-id: http://core.svn.wordpress.org/trunk@28841 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Revisions: Properly position the spinner on Compare Revisions screen.

props vinod dalvi for initial patch.
fixes #28590.
Built from https://develop.svn.wordpress.org/trunk@29054


git-svn-id: http://core.svn.wordpress.org/trunk@28842 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Better styling for the larger image preview in the attachment details modal. Portrait images still have problems in Firefox due to percentage height. props mikeyarce for the initial patch. see #28800, #24716.

Built from https://develop.svn.wordpress.org/trunk@29055


git-svn-id: http://core.svn.wordpress.org/trunk@28843 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media grid:

* Introduce the concept of bulk editing via a separate mode. Like the list view, only bulk deleting is available. The UI is a little funky, especially with the field display toggles there, but refinements will come.
* Up the max thumbnail size from 120px to 150px.
* Slide-down panel for the add new uploader. Known issue: it doesn't close again.
* Remove the toolbar region in the EditAttachment frame.
* Defer a function call so the grid fills available space.
* Give feedback when no results are found. Also needs styling.

props ericlewis. see #24716.

Built from https://develop.svn.wordpress.org/trunk@29056


git-svn-id: http://core.svn.wordpress.org/trunk@28844 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media grid attachment modal:

* Keyboard navigation.
* History and routes for single items and search results.

props adamsilverstein. see #24716.


Built from https://develop.svn.wordpress.org/trunk@29057


git-svn-id: http://core.svn.wordpress.org/trunk@28845 1a063a9b-81f0-0310-95a4-ce76da25c4cd