Adapted the creatures definition to the new format.

I also removed some old or obsolete code and adapted the .gitignore file to latest changes.

Fixes #151
Updated the spawn pools.

Move the Wizard and Gnomes to Hero teams. Added Slimes where missing...
Fixes according to @hwoarangmy's input.

+ Renamed Dance Rate to Claim rate.
Added the config/ folder to installed data and symlinks

Thanks to @hwoarangmy for pointing out. :)
Merge pull request #226 from Bertram25/new_parser

New creature definition and parser