JOSM/ImageryCache: Initial commit

git-svn-id: http://svn.openstreetmap.org/applications/editors/josm/plugins@29363 b9d5c4c9-76e1-0310-9c85-f3177eceb1e4
Fixed UTF8 character bug.

git-svn-id: http://svn.openstreetmap.org/applications/editors/josm/plugins@29365 b9d5c4c9-76e1-0310-9c85-f3177eceb1e4