'remove room' button for rooms

[ppettit]

@androidwiltron said:

"a room may need to be removed from peakaboo under certain circumstances

a button with an 'I can't let you do that dave' prompt would be good for each room.

admin only

i've got this far (in the console)

`Rooms.remove({_id: 'HAL'})`"

I said:

"good idea.
as it stands, nothing that can't be immediately regenerated is stored in the db anyway, so deleting is not a terrible thing (indeed, if you try deleting the room with the command you mention while the capture agent is still running you'll notice it instantly reappear as the capture agent listens for it's own deletion and immediately re-instates itself!)
we are considering adding the ability to add custom room metadata that would be stored on the server rather than on the capture agent (like our current netreg field). we would probably add that stuff in a new collection though to preserve the above behaviour."

@androidwiltron said:

"Commit be720034 in branch uom will do a pull request with other things soon"