see #josm10590 - new icons for `amenity=shower` and `leisure=firepit` (PD/CC0, atch by Klumbumbus)

git-svn-id: http://svn.openstreetmap.org/applications/share/map-icons@30702 b9d5c4c9-76e1-0310-9c85-f3177eceb1e4