Some support in place.
Merged develop.

Conflicts:
	base/lib/application.coffee
Added watchtower.
Added configs and check for a valid-ish sentinel config.
Documentation.
Sentinel test config files.
Try the more 'official' sentinel client.
Upgrade to the now-required redis.
Shorter down-after period.
Support the new client.
Fix the standard client connection.
Merged fgeature/sentinel-support