Shorten InterfaceKit to ik within classes. Add sensor value loggin.

Sensor logging did not occur. The raw sensor values within the internal
"central_dict" are written to the Kivy log file every second. Currently,
this means the temperature value is incorrect, but when the correct settings
are implemented, the value within the dict will be correct.
Merge branch 'master' of github.com:psas/launch-tower-comm