Add a few new rendering rules:

Add a few new rendering rules:
- parking_aisle
- cycleway
- tram (problematic atm, needs tweaking for colinear highway/tramways)
- waterway=drain
- power=station
- golf=hole
- leisure=pitch
- landuse=recreation_ground
- man_made=pier
- leisure=marina, slipway, sports_centre
- amenity=school (area)
- access tags
- beach

Tweaks to existing tags:
- make route casing thinner
- make oneway arrows less obtrusive
- unspecified paths brown, not green
- service roads