chtdb.txt housekeeping

Brings chtdb.txt upto date with my own version (merged last updates in),
New cheats added for various games, including a batch of widescreen cheats.
Fixed various cheat names, and placed others in list selects to make them more user friendly
Fixed various issues with last few updates, where cheats were added twice and/or in the wrong place (so they wouldn't get pulled in by the correct game)