Rename some constants
Copy highway=construction,proposed to default
Copy landuse=construction from UniRS to default. Rewrite highway=proposed. Cleanup.
Tweak cutline color to avoid confusion with roads (from UniRS)
Tweak order in rendering_types
UniRS,LightRS: tweak tourism=attraction, religious buildings color outline
Revert "Copy landuse=construction from UniRS to default. Rewrite highway=proposed. Cleanup."

This reverts commit a5e603e446a44b53865e945b257ce5c9907dcc0a.
Revert "Copy highway=construction,proposed to default"

This reverts commit a22667405735993da4ffbf35bf42120a4e26d662.
Update rendering_types
Add icons
UniRS,LightRS: draw impassable barriers (block,bollard) as red dots
UniRS,LightRS: new subway_entrance icon. Update icons.
Add missing pngs