fix import in countviewer example, add ValueError to Execption trap in examples.
the imports need to be "from adafruit_espcontrol import ..."
some errors result in ValueError -- report failure but continue retrying.
tested all but espatcontrol_quoteEPD.py since I don't have that hardware. since the only change was to add the ValueError trap, I don't expect any issues with it.
fix import in countviewer example, add ValueError to Execption trap in examples. the imports need to be "from adafruit_espcontrol import ..." some errors result in ValueError -- report failure but continue retrying.