Unnests some code & handles unexpected None found in cache with memcached.
Unnests some code & handles unexpected None found in cache with memcached.

dan-passaro/django-cachalot,BertrandBordage/django-cachalot,GetAmbassador/django-cachalot,dan-passaro/django-cachalot,BertrandBordage/django-cachalot,pombredanne/django-cachalot,GetAmbassador/django-cachalot,pombredanne/django-cachalot