Remove floating IP usage from overview

Change-Id: I7c407ba7f97cccb5a064712995701ba21bae9fd8
Make it clear that volume storage includes snapshots

Change-Id: I3989693be2789237eaa771391a3c748872b3d316
Disable boot from volume (from image) for now

Change-Id: I9781b8a9afd52761123ea3f08bc337992427b3a2