Closes #246 #284 #285 #288 #289 #291 - Improved Fluo cluster management.

Pull request for  #246 #284 #285 #288 #289 #291
There is no easy way of getting this in YARN as Twill doesn't have an application master web page yet.  You can check each NodeManager and see if any apps/containers are running but there is no easy way to get a list.  Twill has a getResourceReport() method where this information could be determined for the user.  I'll create a ticket to create `fluo yarn info` command that will contain the basic status of instance as well as extra info like where workers and oracles are running.