When detecting source directories, make sure they contain l10n files
When detecting source directories, make sure they contain l10n files

participedia/pontoon,mastizada/pontoon,Jobava/mirror-pontoon,vivekanand1101/pontoon,mathjazz/pontoon,mozilla/pontoon,yfdyh000/pontoon,mathjazz/pontoon,mastizada/pontoon,jotes/pontoon,participedia/pontoon,mathjazz/pontoon,sudheesh001/pontoon,Jobava/mirror-pontoon,Osmose/pontoon,Osmose/pontoon,participedia/pontoon,yfdyh000/pontoon,mastizada/pontoon,jotes/pontoon,Jobava/mirror-pontoon,sudheesh001/pontoon,participedia/pontoon,mozilla/pontoon,mozilla/pontoon,m8ttyB/pontoon,yfdyh000/pontoon,mathjazz/pontoon,Osmose/pontoon,yfdyh000/pontoon,Jobava/mirror-pontoon,sudheesh001/pontoon,sudheesh001/pontoon,m8ttyB/pontoon,vivekanand1101/pontoon,vivekanand1101/pontoon,mathjazz/pontoon,jotes/pontoon,m8ttyB/pontoon,mozilla/pontoon,vivekanand1101/pontoon,mozilla/pontoon,m8ttyB/pontoon,jotes/pontoon,mastizada/pontoon,Osmose/pontoon