Fixed 'unknown command' being shown after fullrender.

src/main/java/org/dynmap/DynmapPlayerListener.java

@@ -54,6 +54,7 @@ public class DynmapPlayerListener extends PlayerListener {
                 } else if (split[1].equals("fullrender")) {
                     Player player = event.getPlayer();
                     mgr.renderFullWorld(player.getLocation());
+                    event.setCancelled(true);
                 }
             }
         }