6th release - improved pic firmware integration
This release included the following changes:
- improved integration of Schelte Bron's pic firmware upgrade (incl. refresh from internet)
- adding notification on new pic releases
- new setting: Turn on/off NTP and timezone setable
- new setting: Turn on/off heartbeat led (blink off)
- adding epoch to rest api (last update msg)
- clean up of code and ui & minor fixes