espalarm Code

Allow configuration query

Add RFM69 library, and some skeleton code

Another seqno case

Send some queries more than once. Keep a sequence number so we don't do everything three times.

Add a class (simple for now) to hide clock queries in.
Migrate almost all calls to gettimeofday() to it.
Add an additional exception in Peers.cpp to catch infinite lastqp == 1.

Enable more verbose logging again

Small cleanup

Keypad.cpp, Peers.cpp : play with task details.
Others : basic functionality for a RGB LED and siren.

Remove commented statements

Prepare for output devices such as sirens, lights, and rgb leds