latitude/longitude values needs to be sanatized #27
Description
Feature request: check plausibility of values for longitude and latitude.
Due to misconfigured devices my nodes.json ends up with entries like this:
"longitude":9.729235768318176,"latitude":0
or
"longitude":9.729235e+06,"latitude":5.2399705+e07
Its only two or three out of hundreds of devices. But these let the meshviewer render transcontinental links. Talking to the device owners is not always an option.