Version number in map download file path.

[Jabark]

Make maps download with the version number to avoid players getting conflicts.

[HSZemi]

Possible issues with this approach:

• The map might already have the version number in the file name, leading to stuff like ForestNothing_v1_v1.rms
• The map might already have a different version number in the file name, leading to stuff like ForestNothing_v1_1.0.rms or ForestNothing-1.0.0_v3.2.rms
• It makes the map name longer in-game

Our current philosophy is to only touch user generated data where necessary (e.g. rescaling uploaded images), but we usually keep file contents and names as they are, so I would advocate against such a feature currently.