Added broader exception handling in version determination to see if this fixes build problems on rtd.
Added broader exception handling in version determination to see if this fixes build problems on rtd.

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