2 DONE container that takes input to switch focus
3 DONE container that does "exposee"
10 TODO listbox (with draw callback and scroll bar)
14 TODO "half-automatically" self-sizing dialog (by specifying number of "lines" in advance)
20 TODO singleplayer dialog
23 TODO multiplayer dialog
31 TODO make video resolution slider work
32 TODO make cvar controls save their values on change