Merge pull request #6359 from jpwhiting/build_against_qt_5.11

Add missing header includes to build against Qt 5.11.0

src/gui/src/ActionDialog.cpp

@@ -27,6 +27,8 @@
 #include <QtGui>
 #include <qbuttongroup.h>
 
+#include <QButtonGroup>
+
 ActionDialog::ActionDialog(QWidget* parent, ServerConfig& config, Hotkey& hotkey, Action& action) :
     QDialog(parent, Qt::WindowTitleHint | Qt::WindowSystemMenuHint),
     Ui::ActionDialogBase(),

src/gui/src/ScreenSetupView.cpp

@@ -24,6 +24,8 @@
 #include <QtGui>
 #include <qheaderview.h>
 
+#include <QHeaderView>
+
 ScreenSetupView::ScreenSetupView(QWidget* parent) :
     QTableView(parent)
 {