Multiple-room windows

[JadedCtrl]

Right now, all conversation views are concentrated in the main window― allowing conversations to be kept in seperate windows might be useful for some workflows.

The way I see it, conversations might be "dragged" from the ConversationList out of a window to create a seperate window, and dragged onto another window to add it to that one's ConversationList. This could let the user group related chats into seperate windows, etc. If a window has only one conversation, no ConversationList should be shown.

Putting new conversations into their own windows should be an option, though by default they should be added to the main window.