Improve interactive map #52
Description
I don't like the way that the interactive map zoom currently works.
Right now the "transform" SVG attribute is applied to zoom into the elements. This is a pretty raw way to zoom as it means that everything gets bigger, even things like stroke widths which should remain the same.
Ideally, also, the stops, the trips and their corresponding labels should be visible at all levels of zoom. This will most likely results in the overlap of many labels, therefore an automatic label placement algorithm that spread them apart should be used.