Added Triggers, and some placeholders for coding pickups

You can pick up the "weapon" and it changes an attribute of the player.
Added placeholder for gun on the player model, it does not tilt with the
player yet.

(Also deleted some more unity generated IDE project files.)
What is dis?? :P
Merge branch 'master' of https://github.com/johannesgunnar/Afreksdalur

Conflicts:
	Library/InspectorExpandedItems.asset
	Library/guidmapper