Cheats: Added a cheats related log, changed color of a few positive logs.

If any cheats file is not found, the "Not found Cheats file" message will appear with its full path of the cheats file on the log screen.

Changed color of a few positive logs to green from grey.
Merge pull request #326 from tadatada/mod_cheats_logs

Cheats: Added a cheats related log, changed color of a few positive logs.