A game's level name is the map's own (custom_maps\hugeass), so no screen or
server browser listing shows a hash, and the game record's map version is
the map's hash's first 32 bits, which a client finds its file by. Maps are
no longer renamed; a download beside another version of its name is named
<name>_<hash>.map and listed as "(2)"; maps the last build renamed get
their names back. Network version 29: the level name and the map version
mean something else.