Add Call
Normalize Caller and Answer data to Call.
Use consent flag to toggle display of phone number
Add answers to questions; add Question#answer, #voice_file? and #numerical_response?
Add TwilioSessionUtility#load_call to load a call before twilio actions
Add consent during integration testing
Add redirect matchers for gather and record
Add validations for answers
Rename audio assets for domain clarity
Renamed locations.csv.example and questions.csv.example for clarity
Split apart VoiceFeedbackController
Remove old VoiceFeedbackController
Remove old VoiceFeedbackController views
Make Answer.voice_messages scope more symbolic
AnswerPlayer now only tries to play voice answers.
Merge pull request #175 from codeforamerica/separate-voice-feedback-controller

Split up VoiceFeedbackController