Only allow one instance of vgtSmoothWindbar also

Don't do anything if sorter was replaced, even for one tick only. Hopefully fixes issue #907, but not confirmed, though very highly plausible.

Script parameter to adjust winning score for Mutant

team coloured, just for the heck of it, based on a param. also del airmine, 'cause, probably not fun here. you're invuln anyway.

merge ☹

Racer challenge map #15

and ofc fix pas2c build

render input prefix independent of inputstr so that e.g. a username will not lead to weirdnesses

chat/copypaste: some adjustments and sanity checks

copy to/paste from system clipboard (via frontend)