Added butler dialogue trigger

VP disappears after you talk to the butler, and the Malforeign spoksmen arrives.
Fixed interactable bug
Merge branch 'testing' of github.com:brwhale/president-game into testing
Merge branch 'testing' of github.com:brwhale/president-game into testing
Added simple game ending

* Game simply ends when last evidence picked up or time runs out.
Added game evidence, win condition, to W-scene

*The game can now be won!
*A couple of pieces of evidence were added to the game
*Small revisions to evidence content were made