Revert [26618], no longer needed after reverting [26593], also fails to remove a border-top from .widget-inside when the widget is in a sidebar. See #26391.

git-svn-id: https://develop.svn.wordpress.org/trunk@26621 602fd350-edb4-49c9-b593-d223f7449a82
RTL fix for themes.php. props yoavf. fixes #26405.


git-svn-id: https://develop.svn.wordpress.org/trunk@26622 602fd350-edb4-49c9-b593-d223f7449a82