Right align theme Clearlooks2
/lib/editor/tinymce/tiny_mce/3.4.9/plugins/inlinepopups/skins/clearlooks2/window.css

Right align Tabs and Table's "to left" cells
/lib/editor/tinymce/tiny_mce/3.4.9/themes/advanced/skins/o2k7/dialog.css

(I would LOVE to have it fixed on a pure Moodle core level or on a Theme level and not inside a specific TinyMCE version, which should be applied on each future version update, please advise)