chat: further tweaks and cleanups

different implementation for utf-8 char detection/handling

chat: generate utf8 info e.g. for pasted contents

fix techracer map 3 another small test map

- ?Fix? nemo's attempt in r959219241c67 - Wrap mode: camera comes to followgear by the shortest path (better implementation, than sheepluva's re0d7d499c851) - Wrap mode: keep less than 50% of the screen grayed

merge

ups, forgot we need to make TechRacer aware of airmines

new test for lols removed hwp and old maps

New gd translation of main ts file.

Catch exceptions in accept() call