Added changeEvent calls where appropriate

Need to call into the superclass in order not to lose functionality. Was
missing in the wizard, hence the many missing occurrences.

Reviewed-by: Friedemann Kleint

src/libs/utils/projectintropage.cpp

@@ -113,6 +113,7 @@ void ProjectIntroPage::setDescription(const QString &description)
 
 void ProjectIntroPage::changeEvent(QEvent *e)
 {
+    QWizardPage::changeEvent(e);
     switch (e->type()) {
     case QEvent::LanguageChange:
         m_d->m_ui.retranslateUi(this);