Improve mod_tile_latency munin graph to show latencies split by zoom level



git-svn-id: http://svn.openstreetmap.org/applications/utils/mod_tile@29338 b9d5c4c9-76e1-0310-9c85-f3177eceb1e4
Move mod_tile_latecy munin graph to correct directory



git-svn-id: http://svn.openstreetmap.org/applications/utils/mod_tile@29339 b9d5c4c9-76e1-0310-9c85-f3177eceb1e4