data/objects/rival_pane.cfg: If the mode is off line, remove the
'Multiplayer Challenge' from the list of rivals. Make the 'Random
Rival' the default rival for the off line mode.
data/objects/title_controller.cfg: If the mode is off line, change the
'Multiplayer' label for something like 'Single Player'.
data/objects/rival_pane.cfg: If the mode is off line, remove the 'Multiplayer Challenge' from the list of rivals. Make the 'Random Rival' the default rival for the off line mode.
data/objects/title_controller.cfg: If the mode is off line, change the 'Multiplayer' label for something like 'Single Player'.