added CLOCK functionality, mod defs, mod UDP svr

clock functionality (hour,min,sec) with multi-colors (real-time
changeable), option to get time from NTP server, timezone selection,
DST option.

Made AllDefs.h more easy to update in the future, and probably less bug
prone.

Changed the specific EcmServer to a more generic RTColorServer - to
handle any (not just External Ctrl Mode) real-time color changes.

Other minor changes.
Merge branch 'clock'