Add Redis to development VM and remove rabbit, memcached.
Install redis as the cache.

Removed some lingering stuff for rabbit and memcached
as well.
Oh travis..
Typo with the package name
Updated celery configurations to use Redis
Merge branch 'master' into feature/redis

Conflicts:
	.travis.yml
Merge branch 'master' into feature/redis

Conflicts:
	roles/web/handlers/main.yml
Fix up some loose ends with Redis as a cache and broker.
REmove dev serve.r
Merge pull request #201 from dstegelman/feature/redis

Support Redis by default