Web portal for configuration instead of config.json

[frederikheld]

Right now the configuration has to be done via config.json. This only works well for software oriented users. It would be nice to have a web portal that allows interactive configuration of the camera module.

The information could still be stored in config.json, but the values are loaded into a web form where they can interactively be changed. They are then saved back to the json file.

First MVP could be to load the entire config.json into a textarea.

Optimal implementation would be an form that auto-generates itself according to the types in the json file (this would require additional meta information in config.json though).