espalarm Code

Allow for other background colours than black, set them based on alarm status.
Initialize a couple of fields in Weather.
Only draw (in Clock as well as Weather) when values are valid.

Call function to show armed status

Additional include file for common definitions

Clear out the peer list on disconnect

Message is more verbose wrt (de)press

Avoid time(0) call, appears to freeze sometimes

Additional variants on timeString method for Peers.cpp

Mention build timestamp at startup

Include seconds in build timestamp

Rebuild the build timestamp at every invocation.