MT SMS correction

- VBTS_Send_SMS_Direct sends a mobile terminated SMS
- python-messaging replaced with smspdu library
Simple location lookup from RRLP database

- Removed vestigial parser from SMS_Parse.py
Location reporting

- Now with an automatic empty sms to trigger location updating
Rewrote VBTS_Get_Location for use in the chatplan

- Added VBTS_Log_SMS.py to setup_fs.py
Corrected a SubscriberRegistry access for failed queries
Merge branch 'markw'