[josm_undelete] fix #josm9644 - handling of redacted objects

git-svn-id: http://svn.openstreetmap.org/applications/editors/josm/plugins@30271 b9d5c4c9-76e1-0310-9c85-f3177eceb1e4
[josm_undelete] fix #josm7520 - zoom to undelete objects

git-svn-id: http://svn.openstreetmap.org/applications/editors/josm/plugins@30273 b9d5c4c9-76e1-0310-9c85-f3177eceb1e4