Posts screen: show when a post is "locked", hide the checkbox, Quick Edit and Trash links, props dh-shredder, see #23312

git-svn-id: http://core.svn.wordpress.org/trunk@23371 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Clean up rendering of the title column in the posts list table. Simplify branching. Use get_userdata() rather than get_user_by( 'id' ). Change string to '%s is currently editing'. see #23312.


git-svn-id: http://core.svn.wordpress.org/trunk@23372 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Ensure we have a charset before calling mb_internal_encoding(), avoiding an unnecessary (if suppressed) warning. props dfavor. fixes #23093.



git-svn-id: http://core.svn.wordpress.org/trunk@23373 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Return WP_Error from wp_crop_image() if saving has failed. props macbrink. fixes #23325.

git-svn-id: http://core.svn.wordpress.org/trunk@23374 1a063a9b-81f0-0310-95a4-ce76da25c4cd