This is a bug to follow the translation of the Firefox Beta pages for desktop and mobile. The pages are: https://www-dev.allizom.org/el/firefox/beta/ and if your locale is supported on the Android market: https://www-dev.allizom.org/el/mobile/beta/ The strings are in a new .lang file here: http://viewvc.svn.mozilla.org/vc/projects/mozilla.com/trunk/el/includes/l10n/firefoxtesting.lang?view=co Thanks for updating your file on svn or alternatively attach your translated file to this bug and I will commit it for you.
Committed revision 101663 a couple of days ago. The file was translated by Ilias Spiropoulos (who did an excellent job btw) and I'll be in contact with him. Looks like we have a keeper here! :)
\o/ Thanks and welcome to Ilias :)