Merge pull request 'Add TNTMode to ONLY_TB' (#167) from TNTMode into master

Reviewed-by: Lixfel <lixfel@steamwar.de>

BauSystem_Main/src/de/steamwar/bausystem/commands/CommandTNT.java

@@ -36,7 +36,7 @@ import org.bukkit.event.entity.EntityExplodeEvent;
 
 public class CommandTNT implements CommandExecutor, Listener {
 
-    private static TNTMode tntMode = TNTMode.OFF;
+    private static TNTMode tntMode = Region.buildAreaEnabled() ? TNTMode.ONLY_TB : TNTMode.OFF;
 
     public static TNTMode getTntMode() {
         return tntMode;