Insteon_IOLinc: Filter Out Status Requests in Process Message

Needed to check if an incoming message is in response to a status request, before running it through the specialized _process_message.
Insteon_IOLinc: Redefine how IOLinc Sensors are tracked
Insteon_IOLinc: Add Request Sensor Status Sub
Insteon_IOLinc: Cleanup a few bugs
Insteon_IOLinc: Prepare for Resetting Relay State When Momentary Mode is Used
Merge pull request #219 from krkeegan/insteon_iolinc

Updates to IOLinc Module, Significant Changes in Configuration