put Q_OBJECT everywhere it should be (removes warnings when running lupdate)

src/qt/optionsdialog.cpp

@@ -23,6 +23,7 @@
 /* First page of options */
 class MainOptionsPage : public QWidget
 {
+    Q_OBJECT
 public:
     explicit MainOptionsPage(QWidget *parent=0);
 
@@ -45,6 +46,7 @@ public slots:
 
 class DisplayOptionsPage : public QWidget
 {
+    Q_OBJECT
 public:
     explicit DisplayOptionsPage(QWidget *parent=0);
 
@@ -58,6 +60,8 @@ public slots:
 
 };
 
+#include "optionsdialog.moc"
+
 OptionsDialog::OptionsDialog(QWidget *parent):
     QDialog(parent), contents_widget(0), pages_widget(0),
     model(0), main_page(0), display_page(0)