modified the tables, they should be 100% now

NOTE** might need to delete all the migrations in the
pluvali/CopingGame/migrations folder before copying from git to local
working directory. I had to do a lot of backwards migrations to get it
to work. So if you delete those previous migrations, there shouldn't be
any problem.

DETAILS:
Changed the SaveState table to a Purchases table, each purchase will get
its own instance and be linked to the player who purchased it. The User
model was changed to Player and is drawn from django.contrib.auth.models
User. Player table will have the user's current colors (fav_bg and
fav_text) and add email functionality (which I think should be simple to
add).