- preview generation for rubbers, air-mines, crates, barrels
- add map previews for the other 6 TechRacer maps
- make TechRacer (more or less) work out the box
- randomize map by clicking on preview (when map unspecified)
f3e903ace2d3
Make hedgewars frontend not change scheme/weps to Default if script cfg doesn't match a known scheme. That is, will leave on whatever is selected. Also set a bunch of schemes where we don't care what the scheme/weps are to *