Leaderboard and StudentSelection. Staticization.

The Leaderboard and Student selection functions are now (fingers
crossed) working with the server!  ProblemWorker and Sequest are now
static.  Score reporting is also implemented, and some int playerIDs
which should have been strings have been corrected.  Also, the
missingscript bug with the prefab and the double initialization bugs
have been ironed out in my environment- but I'm not sure about Unity
5.0.  Cool stuff!