TinyMCE: use CSS classes instead of instance specific IDs for styling, props mattheu, fixes #26197.

git-svn-id: https://develop.svn.wordpress.org/trunk@26364 602fd350-edb4-49c9-b593-d223f7449a82
Cron Request: Fix incorrect use of add_query_arg() arguments.

props datafeedrcom, dimadin.
see [26267].
fixes #26218.

git-svn-id: https://develop.svn.wordpress.org/trunk@26365 602fd350-edb4-49c9-b593-d223f7449a82