Add radwege-check to "Wo uses it"

[tordans]

Thanks again for this great library. It allows us to add great filtering to a very special data set of 1,779 scenes, showcasing the aggregated results of a survey about the "subjective safety" of bicycle lanes with 200,000 survey-entries.

The app does a few special things…

• The state is handles via URL, so each filter-configuration is shareable. There is some extra code to make sure an unexpected URL does not break the app; and that the URL params look nike; and that they are always in the same order (for SEO and such)
• Some filter groups are multi select and subtractive (check boxes), some or single choice (radio buttons)
• The filter buttons are styled differently based on if the results would change (that logic is not perfect, but helps using the UI)

I have to admit, though, that I never got around to use the Types from https://github.com/itemsapi/itemsjs/issues/106. I had started with some rough types of my own which I continued to work with since my TS know how was not enough to get the more sophisticated types working in a timely manner.

The code is OpenSource at https://github.com/FixMyBerlin/fixmy.safetycheck

[cigolpl]

Thank you for sharing your use case!