Refactoring the new dialog manager module and fixed keyboard problem in Linux touch panel.

src/forms/settings/SystemSettingForm.h

@@ -3,8 +3,6 @@
 
 #include <QWidget>
 
-class SelectDialog;
-
 namespace Ui
 {
     class SystemSettingForm;
@@ -23,9 +21,6 @@ private:
     void updateStorageUsed();
 
     Ui::SystemSettingForm* mUI;
-
-    SelectDialog* mProtocalSelectDialog;
-    SelectDialog* mFilterSelectDialog;
     QThread* mDiskInfoCaller;
 
     double mDiskSize;