renamed smsparser.getForm() to smsparser.getFormCode()
added jsonforms.getForm() and changed direct use of jsonforms object.
refactored settings schema to make registratons and schedules more
flexible.
fixed regex on send_time to optionally include timezone.
minor tweaks to kanso.json settings_schema
changed default message to empty on scheduled message.
updated json-forms
updates sentinel
0.3.0-beta.20