Unify wizards with TOC and cancel button.

QTBUG-28385 is biting us over and over (QWizard doesn't have close
button nor cancel button on Mac in Qt 5), and actually there's no reason
for us having a wizard without the features from Utils::Wizard.

Task-number: QTCREATORBUG-10346
Task-number: QTBUG-28385
Change-Id: I80c0d82fe6738496c2ac03c31a1c2757ade8e266
Reviewed-by: Jarek Kobus <jaroslaw.kobus@digia.com>
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

src/libs/utils/filewizarddialog.cpp

@@ -30,8 +30,6 @@
 #include "filewizarddialog.h"
 #include "filewizardpage.h"
 
-#include "hostosinfo.h"
-
 #include <QAbstractButton>
 
 /*!
@@ -49,18 +47,6 @@ FileWizardDialog::FileWizardDialog(QWidget *parent) :
     Wizard(parent),
     m_filePage(new FileWizardPage)
 {
-    setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
-    setOption(QWizard::NoCancelButton, false);
-    setOption(QWizard::NoDefaultButton, false);
-    if (HostOsInfo::isMacHost()) {
-        setButtonLayout(QList<QWizard::WizardButton>()
-                        << QWizard::CancelButton
-                        << QWizard::Stretch
-                        << QWizard::BackButton
-                        << QWizard::NextButton
-                        << QWizard::CommitButton
-                        << QWizard::FinishButton);
-    }
     const int filePageId = addPage(m_filePage);
     wizardProgress()->item(filePageId)->setTitle(tr("Location"));
     connect(m_filePage, SIGNAL(activated()), button(QWizard::FinishButton), SLOT(animateClick()));