Made it possible to have a default randomized map and mode from a user defined list when the human players count is between two values defined by the user
Added dvar mapvote_default_rotation_maps
Added dvar mapvote_default_rotation_modes
Added dvar mapvote_default_rotation_min_players
Added dvar mapvote_default_rotation_max_players
Added the possibility to have no maps at all in the mapvote_maps dvar.
This is useful for when you want to organise your maps dvar and you don't want any MW3 map for example
