Adding model for Supporters
Adding other models and fixing them.
Add POST handlers for author and supporter
Merge branch 'master' of https://github.com/gdbelvin/mailsafe

Conflicts:
	models.py
Fixed UUID
Add link view and update content model
Merge branch 'master' of https://github.com/gdbelvin/mailsafe

Conflicts:
	models.py
Make models work properly
Working author, link, supporter DB read/write

Switched to using the correct ndb APIs
working test email