The quotes were used inconsistently through other messages.  For things like welcome, room topic and messages which can contain spaces it might make sense for there to be quotes.  Elsewhere there was a mix of "you have been xyzed from room 'general-chat'", "you have been xyzed from general-chat" and "you have been xyzed from 'general-chat'" so I took out quotes and the word 'room'.  I don't mind if you have a preference either way - adding that stuff back should be a simple case of updating the resx strings now.