[josm_utilsplugin2]: usedinways/usedinrealtions; multitagger: center on double-click

git-svn-id: http://svn.openstreetmap.org/applications/editors/josm/plugins@30384 b9d5c4c9-76e1-0310-9c85-f3177eceb1e4
see #josm9890 - fix two of three issues with imagery-xml plugin

git-svn-id: http://svn.openstreetmap.org/applications/editors/josm/plugins@30386 b9d5c4c9-76e1-0310-9c85-f3177eceb1e4