fix bug in del tower and some ui changes

loader.h

@@ -6,6 +6,7 @@
 #include <QTextStream>
 #include <QXmlSchema>
 #include <QXmlSchemaValidator>
+#include <QObject>
 #include "adcore.h"
 
 struct tbHeader
@@ -142,9 +143,8 @@ struct tbAnimation : tbHeader
 
 class Loader : public QObject
 {
-    Q_OBJECT
 public:
-    explicit Loader(QObject *parent = 0);
+    Loader();
     void save(QString filename);
     void load(QString filename);
     Game_Data * loadlevel(int id);
@@ -164,10 +164,6 @@ public:
     QMultiHash <int,tbTowerOnLevel> levTowers;
     QMultiHash <int,tbUpgrade> upgrades;
 
-signals:
-
-public slots:
-
 private:
     QDomDocument * doc;
     QFile * file;