Reduced the additional calorie burning rate of Bio-Combustion Machine trait.

Add a minor plain calorie reduction rate to Bio-Combustion Machine trait.

Renamed lua code file, which hopefully fixes possible overwrite issues.

Polished some trait descriptions that have been written poorly.

Fixed all known bugs.
Changed Bio-combustion Machine trait points to +18.

Gladiator trait effect (which is buggy but should not impact normal gameplay in any serious way) no longer take place even without that trait.