Feature/election quiz

- 2 conversations with respective quizzes added
- Voting experience conversation - followed by voting experience quiz
- Group C conversation (same copy as voting experience, different contact fields) - followed by group c quiz. 
- Note that Group C quiz is still using the random quiz since I anticipate copy changes - it was originally 4 random questions and now it is only 1. 
- This is the mxit implementation so that it can be released asap - adaptions will have to take place for the push messaging to ussd flow which is rather complex.