Use on_second_tick for progress est and elapzed time as RTC doesn;t work on smoothieboard
Merge remote-tracking branch 'upstream/edge' into feature/add-est-to-progress
Don't display ETA for first 10 seconds
don't accumulate time if paused
Merge pull request #146 from wolfmanjm/feature/add-est-to-progress

Use on_second_tick for progress est and elapzed time as RTC doesn;t work...