Fix logic in dashboard ReviewListView()
Fix logic in dashboard ReviewListView()

The if clause caused the queryset to be evaluated which it not a good
idea with a couple of million reviews ;-) Also the queryset was never
assigned argh

sasha0/django-oscar,sonofatailor/django-oscar,solarissmoke/django-oscar,ka7eh/django-oscar,anentropic/django-oscar,sonofatailor/django-oscar,solarissmoke/django-oscar,WillisXChen/django-oscar,sonofatailor/django-oscar,django-oscar/django-oscar,sonofatailor/django-oscar,django-oscar/django-oscar,spartonia/django-oscar,john-parton/django-oscar,anentropic/django-oscar,WillisXChen/django-oscar,solarissmoke/django-oscar,django-oscar/django-oscar,john-parton/django-oscar,spartonia/django-oscar,WillisXChen/django-oscar,solarissmoke/django-oscar,anentropic/django-oscar,okfish/django-oscar,WillisXChen/django-oscar,john-parton/django-oscar,michaelkuty/django-oscar,michaelkuty/django-oscar,anentropic/django-oscar,sasha0/django-oscar,WillisXChen/django-oscar,sasha0/django-oscar,michaelkuty/django-oscar,spartonia/django-oscar,okfish/django-oscar,ka7eh/django-oscar,john-parton/django-oscar,django-oscar/django-oscar,okfish/django-oscar,WillisXChen/django-oscar,ka7eh/django-oscar,spartonia/django-oscar,okfish/django-oscar,michaelkuty/django-oscar,ka7eh/django-oscar,sasha0/django-oscar