added settings page for sensor
set offset for accelerometer x y
made controler with socket.io for handling child processes
added connect controler btn to sensor settings, if there is no connection to controler
added controler host, port and device path to sensor settings page
added calibrate compass in settings
autokill child if controler parent dies (heartbeat)
on first start, if controler is not running, auto reconnect to controler (timer to insert socket.io script)
minor changes and bugfixes
Merge branch 'feature/sensor' into develop