2023-02-26: reorganized open-pnp.py in to open_pnp_classes.py and open_pnp_utils.py

reorg platforms.py and images.py in images.json
reorg settings.py in open-pnp.ini
remove imports for platforms.py/images.py/settings.py
add reload data function

typos in README.md, adds count to status page, check if image/config available, renamed vars.py to settings.py, removed extending python path