Changed add_to_cart: don't use is_deliverable for raising HTTP404 (only deliverable)
Changed add_to_cart: don't use is_deliverable for raising HTTP404 (only deliverable)

baffolobill/django-lfs,leadbrick/django-lfs,pigletto/django-lfs,wisonwang/django-lfs,baffolobill/django-lfs,diefenbach/django-lfs,diefenbach/django-lfs,wisonwang/django-lfs,leadbrick/django-lfs,baffolobill/django-lfs,pigletto/django-lfs,wisonwang/django-lfs,leadbrick/django-lfs,diefenbach/django-lfs,pigletto/django-lfs