Separates voicemail related properties into Voicemailinfo model.
1. Creates Voicemailinfo model
2. Adds sql query to create its associated table in db
3. Update Voicemail and Transcription models and its associated views.
Display VoicemailInfo, fix callerdistrict column name misspelled in db table, update views
POST form to voice controller's addTranscriptionPostForm action.
Save user submitted transcription form into database.