Various fixes - make CluePaddle compile and ClueStick start correctly.

Check for cards which must be in envelope.
Never suggest a card which you have already been shown in a disproof.
Compare if we have found all the cards a player might have at each round.
Do inferences right before suggest not just before accuse.
Move Clue* ai projects into entries/jwg
Change target CPU to Any.
Add test for not getting disqualified (accuse undisproved suggestion).
Move added file in line with the other files moved.
Change the reference to NUnit to the correct location.
Merge pull request #12 from jwg4/clue_paddle_fixes

Various fixes - make CluePaddle compile and ClueStick start correctly.