remove debugging alerts
remove 'updateProgress' so avoid an extra 'get_probelm' cycle
add 'tally_problem_hints'
reorganize sequencing to make problem hints work -- this solution is a hack but the best I can come up with
(the correct_map reference is to one of many instances and it turns out to be the wrong one)
problem hints work now
drop down hinting works
basic numeric type is basically working. needs a bit more work yet.
add hinting styles:
  question_hint_correct
  question_hint_incorrect
  question_hint_compound_condition
hinting message colors are working, sort of, but need some more testing and adjustment