switch from displaying ugly arrows to displaying roads with missing contraflows

it failed, as currently it is impossible to find truly oneway roads - there are
numerous examples of roads with oneway tag with lane in reverse direction mapped
separately
Merge branch 'master' into new_oneway_display
Merge branch 'master' into new_oneway_display
consider additional tags
Merge branch 'master' into new_oneway_display
fix old merge of master branch
fix fixing old merge
refactor and bugfix surfaces
New oneway display and associated restyling