[Qt] include and file header cleanup

- alphabetical ordering
- correct ordering own headers before normal headers etc.

src/qt/coincontroldialog.h

@@ -14,12 +14,14 @@
 #include <QString>
 #include <QTreeWidgetItem>
 
+class WalletModel;
+
+class CCoinControl;
+class CTxMemPool;
+
 namespace Ui {
     class CoinControlDialog;
 }
-class WalletModel;
-class CCoinControl;
-class CTxMemPool;
 
 class CoinControlDialog : public QDialog
 {