Fixed import error
Fixed name errors in models
Fixed GameLevels modal z-index in admin UI
Enabling SSL automatically enables HSTS
Added better comments to static handler
Added new version HTTP headers
Fixed small bug that prevented ssl enabled startup due to a missing comma.
Merge pull request #33 from ElmoArmy/devel-elmo

Fixed small bug that prevented ssl enabled startup due to a missing comma
Updated about page
Working on Python3 support
Added py3 setup script
Merge branch 'py3' into devel