Added db_index to the language_id field in *Translation model.
Added db_index to the language_id field in *Translation model.

git-svn-id: 202783c9d15bfb964c1fb0ba2da3a3de701e48be@22 7f4da543-ba27-0410-bf1f-6504834a333d

ziima/django-multilingual-ds9,stefanfoulis/django-multilingual,frol/django-multilingual-ng,frol/django-multilingual-ng,stefanfoulis/django-multilingual,ziima/django-multilingual-ds9,ojii/django-multilingual-ng