Merge pull request #155 from Harvard-ATG/dev

Dev
Merge pull request #156 from Harvard-ATG/dev

Dev
Merge pull request #157 from Harvard-ATG/dev

Dev
Merge pull request #159 from Harvard-ATG/dev

Dev
fixing QUIZ-63, multiple choices are now updates instead of delete / inserts
adding an implementation of submitMultipleChoice for True Flase questions
Merge pull request #160 from Harvard-ATG/feature/QUIZ-63

Feature/quiz 63
fixing QUIZ-65, the implementation of submittruefalse wasn't correct
should return the value of submitMultipleChoice
adding unit test for submitTrueFalse
Quiz title is escaped via htmlentities any place it's sent to a view
escaping all user inputted items before they are sent back to views -- quiz title and description
escaping all of the user inputted items in the arrays that are sent directly to the views
Merge pull request #162 from Harvard-ATG/bug/QUIZ-67

Bug/quiz 67
htmlentities, fixing export to excel bug
Merge pull request #163 from Harvard-ATG/bug/sanitize-export

htmlentities, fixing export to excel bug
adding another submitQuestion call to try and ensure it actually happens before someone submits
Merge pull request #164 from Harvard-ATG/bug/QUIZ-66

adding another submitQuestion call to try and ensure it actually happens...