Further work on test rendering, adding "show soln"
Renamed SUBMIT -> SAVE when in simultaneous mode
Updated status of test implementation
2 samples updated to use showSolution=true
Fix earlier SUBMIT -> SAVE (doh!) + authorMode
Minor tidy to CTestDeliverySvc
Added note to say these examples were a bit poor!
Added simple linear navigation test samples
Moved currentl-unused "George" tests for pillaging
Fixed logic bug in TestSessionController

(I was closing the item session when advancing to the next
item in linear mode, which was the wrong thing to do.)
Ready for 1.0-DEV22