Allow for user-defined Room lists
Right now, there are two Room lists: Favorites and Rooms (plus Invites).
When there are lot of rooms, all of them are in Rooms list, which can make quite hard to handle them. In my personal case, I see there proper rooms, 1-to-1 conversations, and IRC channels from the IRC bridge.
It would be good if one could create different personal Rooms lists and move the rooms to each list, for better management.