Input P2P tunnels can now be assigned a new frequency. (#3765)

Shift right clicking an existing tunnel only allowed to copied the
stored frequency.

When shift right clicking now and the stored frequency being the same as
already stored one, it will now create a new one and save it to the memory
card. In other words doubling clicking will reset now, otherwise the old
behaviour is still kept.

src/api/java/appeng/api/implementations/items/MemoryCardMessages.java

@@ -29,5 +29,5 @@ package appeng.api.implementations.items;
  */
 public enum MemoryCardMessages
 {
-	INVALID_MACHINE, SETTINGS_LOADED, SETTINGS_SAVED, SETTINGS_CLEARED
+	INVALID_MACHINE, SETTINGS_LOADED, SETTINGS_SAVED, SETTINGS_RESET, SETTINGS_CLEARED
 }