init quiz page
nested controllers from http://www.bennadel.com/blog/2450-using-ngcontroller-with-ngrepeat-in-angularjs.htm
simple quiz
get testquiz from server
create testquiz on server if it does not exist
submit user responses
add correct/incorrect to each question in view
display user selection in blue
populate test date
a few corrections in creating a test quiz if one does not exist, submissions matching the current quizid