Rework roads filter in Sidewalks-Tab

[tordans]

Currently we have "include" and "exclude" filter and I am having a hard time to filter for road classes for certain tasks.

For example, when I want to review all sidewalks tags on mayor roads, the settings are not clear right away:

https://a-b-street.github.io/speedwalk/#14.76/52.70988/13.21958