Consider breaking up django-badger into simpler apps

[lmorchard]

A little while ago, I merged django-badger-multiplayer into django-badger, because there were some weird hacks needed to keep the two apart. Now, django-badger combines a lot of things in one big app:

• basic views & models for badges & awards
• views to allow users to manage & award their own badges
• OBI JSON representations of badges & awards
• deferred awards with claim codes and email addresses (ie. invitations)
• claim code label printing
• progress tracking models
• nomination models & view

Maybe django-badger should be stripped back down to the bare basics, and I should find a way to split most of the above off into "addon" apps without nasty hacks.

Some of these features might more properly belong elevated into badges.mozilla.org and not a reusable Django app at all. (eg. like claim code label printing) Or, maybe even something like claim codes could be spun off into its own not-badge-specific Django app.