Improved TutorClient. Huge refactor. Icon now read from classpath/jar.

Reworked threads, shutdown hook, and exit process to ensure requests are cancelled if student logs/out without cancelling manually.

Converted buttons to labels on panels. Cleaned up 316 panel. Made server auto-detect which panel to use.

Renamed, and removed some things as a result of refactoring.

Done a whole bunch of stuff: ...

- Added service discovery.
 - Refactored the IMapPanel interface and LabelProcessor to make panels simpler.
 - Numbers now end up in queue label.

Nearly finished.  Need to do testing in labs.

Made the server threads deamon threads. No real need too but it is the correct thing to do.

Initial commit.