[josm_utilsplugin2]: multitagger improvements

git-svn-id: http://svn.openstreetmap.org/applications/editors/josm/plugins@30370 b9d5c4c9-76e1-0310-9c85-f3177eceb1e4
PointInfo: Replace openWebPage function by josm.tools.OpenBrowser.



git-svn-id: http://svn.openstreetmap.org/applications/editors/josm/plugins@30372 b9d5c4c9-76e1-0310-9c85-f3177eceb1e4