Updates to fire text integration:

- client updated to raise errors with fire text error codes/messages

New endpoint
- /notifications/sms/firetext
For delivery notifications to be sent to.

app/__init__.py

@@ -71,7 +71,7 @@ def create_app():
 def init_app(app):
     @app.before_request
     def required_authentication():
-        if request.path != url_for('status.show_status'):
+        if request.path not in [url_for('status.show_status'), url_for('notifications.process_firetext_response')]:
             from app.authentication import auth
             error = auth.requires_auth()
             if error: