Fixed behavior tests.

 - Features now mention if test user is in my channel.
 - Reworded feature contents a bit.
 - Print logged exceptions in game runner.
 - Added missing fake user storage.
 - Fixed missing tmp folder.
 - Moved settings and cache syncing to tessu_mod.py.
 - Lower all names in user cache.
 - Escape reserved chars ([,],=,\,:) with '*' in user cache.
User cache: [PlayerUserPairings] --> [UserPlayerPairings].

Cache stores now pairings using TS nick name as key and WOT nick. This makes the cache similar to [NameMappings] in config.
Added comments to cache file.
Added removing of TS users and players from cache who do not appear in pairings.
Added unit tests for user cache.