Allow absolute URLs in editor styles.

Props nacin, obenland
fixes #24787


git-svn-id: https://core.svn.wordpress.org/trunk@24735 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Twenty Thirteen: Go back to dates for style versions, partially changed in [24735]. see #24787.



git-svn-id: https://core.svn.wordpress.org/trunk@24736 1a063a9b-81f0-0310-95a4-ce76da25c4cd