[josm_elevation] code cleanup

git-svn-id: http://svn.openstreetmap.org/applications/editors/josm/plugins@30344 b9d5c4c9-76e1-0310-9c85-f3177eceb1e4
[josm_alignways] code cleanup

git-svn-id: http://svn.openstreetmap.org/applications/editors/josm/plugins@30345 b9d5c4c9-76e1-0310-9c85-f3177eceb1e4