Move the in_admin_footer action out of p#footer-left.alignleft so it is just...

Move the in_admin_footer action out of p#footer-left.alignleft so it is just in div#footer to allow for it to be used more flexibly. Fixes #17358 props aaroncampbell.

git-svn-id: https://core.svn.wordpress.org/trunk@18147 1a063a9b-81f0-0310-95a4-ce76da25c4cd