Add dev-oriented config.py defaults.
Cleanup hint REST code.
Call out WSGI handler.
Minor bug fixes.
Bug fix: don't create a player-team in teams mode.
Fix up team-based sessions.
Don't create a team for first player.
Switch out ng-click for ng-submit on login and registration.
Fix challenge creation.
Fix challenge creation & editing.
Fix up category/challenge deleting.
Fix register submit button.
Update category menu on login/logout.