Removed the Basic*Behavior classes.
Added doxy config to .gitignore
Behavior class slightly more readable
Major changes to Behavior API

The CPlayer's BehaviorGroup now keeps a reference to all other revelant behaviors
including the class, race, armor and weapon.
Implemented very basic leveling
Implemented basic support for experience curves
Implemented loading of experience curve from configuration.
Renamed *Info classes to *Attributes
Renamed *LClass* methods to *CClass*
Major attributes refactoring.