Fix i18n for revision diff strings displaying human time.

Props johnbillion
fixes #23723


git-svn-id: http://core.svn.wordpress.org/trunk@23743 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Make WP_Image_Editor::make_image() safe for replication plugins by making sure the directory for the image being made exists.

Props batmoo
fixes #23306


git-svn-id: http://core.svn.wordpress.org/trunk@23744 1a063a9b-81f0-0310-95a4-ce76da25c4cd