Merge pull request #7 from xanv/develop

Merge develop into master
Remove ADMINS from settings_prod
Add smtp settings
Call painindex.wsgi:application in Procfile
Allow all hosts
Remove :application from Procfile
Set DATABASES['default']
Add DATABASES dict
make homepage simple
add logic back in views, still simple display
find some bugs
filter me some bugs
highlight a bug
Replace random.choice with deterministic choicee, attempt to load regular homepage
Isolate random.choice line, still return simple response
Restore homepage view to initial state

The bug: We had failed to run calc_rating on the seed data, so bugs returned an empty list
Add comment on IndexError
Add test to make sure homepage loads even when missing data
Make sure view returns a response even when no painsources
Make sure featured bug is displayed only if it exists