Fix .lang dump: exclude unapproved strings
Fix .lang dump: exclude unapproved strings

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