Rewritten the party system, so it acually works now :)
Adapted the projectile hit class to the new party system
Adapted all spells to the new party system, so friendly-fire should not
be possible.
Added experience sharing feature for parties
Small cleanup
Updated gitignore
Merge branch 'master' of https://github.com/Jalf-/Adventures.git

Conflicts:
	Adventures/.gitignore