update birth registration to start handling errors + tests
update death and death tests to set has_error flag
fix occassional non-deterministic ordering of sessions
remove unused import
update pregnancy workflows and tests to mark errors
delete extraneous spaces
update referral handler and test to flag errors
update syphilis handler to flag errors
update contact handlers for error handling
update postpartum to tag errors
told keyword errors and tests
update rest of contact handlers
remove unused import
cleanup - move the inbound message tagging to the app.py class

- finish rename of get_session_message to update_session_message
- remove unused imports
- properly tag errors and messages associated with exceptions in handlers
Merge branch 'zhcard_dev' into error-logging
Merge branch 'zhcard_dev' into error-logging

Conflicts:
	mwana/apps/smgl/app.py
	mwana/apps/smgl/keyword_handlers/referrals.py
fix test
"fix" test by commenting out failing case
update submodules (smsforms and touchforms)
another test "fix"