Added a new page for joining rooms, it is no longer done on the lobby
window. This was done to allow the viewing of a large volume of rooms
that are available for a player to join (instead of only being able to
see a couple joinable rooms in the small portion of the lobby window
that would have otherwise been dedicated to displaying those rooms). The
skeleton for this page is implemented, it needs to be set up in it's
entirety and checked for bugs.