renamed to match real functionality.   ultrasonic should control the correct sensor 2 now.
sensor 2 is default sensor in this test script
removed email and database code
converted garage_monitor.py into a simpler sensor with a socket server to respond to get_state() requests
removed some debug code and minor cleanup
update graceful exit
working paired copy of server architecture
minor edits to comments
half done work
middle of changes
optional to use env variables for configuration
fixed socket client communication.  need to test with ledserver
added method to change the  sent data for easier debugging
led server tested and working
minor notes
add todo notes
Merge branch 'feature-convert-to-dumb-gmon-sensor-and-smart-led-server' into dev