Added stable/1.5.x Django branch to env (master is 1.6 now) and used latest stable Django versions.
Added stable/1.5.x Django branch to env (master is 1.6 now) and used latest stable Django versions.

yoza/django-modeltranslation,SideStudios/django-modeltranslation,vstoykov/django-modeltranslation,marctc/django-modeltranslation,yoza/django-modeltranslation,deschler/django-modeltranslation,deschler/django-modeltranslation,SideStudios/django-modeltranslation,extertioner/django-modeltranslation,akheron/django-modeltranslation,marctc/django-modeltranslation,extertioner/django-modeltranslation,akheron/django-modeltranslation,nanuxbe/django-modeltranslation,vstoykov/django-modeltranslation,nanuxbe/django-modeltranslation