Migrating to new Google App Engine

- Move from webapp to webapp2
- Move from master/slave DB to HRD
- Move from webapp template to Jinja2
- Move from cgi to wsgi
- Upgrade from python2.5 to python2.7
- Removing memcache dependency
- .hg's -> .git's
Merge pull request #1 from tmrudick/migrate

Migrating to new Google App Engine