Send YouTrack notifications to a specific room.

Hubot has a YouTrack account and a Hipchat account. Youtrack itself
can send notifications to users. The Hubot user in YouTrack has been set
up to receive notifications. Anytime something changes in YouTrack the
YouTrack bot will message Hubot. Hubot will take any message from
the YouTrack bot and dump it into a specific room. This should let us
add additional tools that can monitor the list of events happening and
take specific actions.

We specifically use the HipChat v1 api in here so that messages aren't posted
as a specific user. With the v1 api you can specify a specific name to post the
messages from.

Relates to [c-2432](http://youtrack.mobiledefense.com/issue/c-2432)