fixed failing tests
fixed failing tests

some tests dependend on features not available in Python 2.6. Other test
failed due to api changes in django-modeldict 1.4. Fixed both issues to
get tests pssing in all supported dependency combinations.

roverdotcom/gargoyle,blueprinthealth/gargoyle,vikingco/gargoyle,disqus/gargoyle,brilliant-org/gargoyle,frewsxcv/gargoyle,Raekkeri/gargoyle,nkovshov/gargoyle,vikingco/gargoyle,monokrome/gargoyle,disqus/gargoyle,roverdotcom/gargoyle,nkovshov/gargoyle,frewsxcv/gargoyle,Raekkeri/gargoyle,frewsxcv/gargoyle,YPlan/gargoyle,nkovshov/gargoyle,Raekkeri/gargoyle,YPlan/gargoyle,blueprinthealth/gargoyle,YPlan/gargoyle,roverdotcom/gargoyle,brilliant-org/gargoyle,blueprinthealth/gargoyle,vikingco/gargoyle,disqus/gargoyle,brilliant-org/gargoyle,monokrome/gargoyle,monokrome/gargoyle