Added an Auto fill transaltions help popover

Addresses this ticket: http://manage.dimagi.com/default.asp?115345#689444

I've added a question mark icon to the "Auto Fill translations" link on application language pages. The popover help text reads "This will pick the most common translations for your selected language.  You can then edit them as needed." as suggested in the FB ticket.
Was the addition of a space intentional? Seems like an odd place to put it if this is used for spacing between the link and the help popover.