Wizard: Raise own window

The OAuth authentication brings the broweser to the front, once thats done the wizard continues.
But the wizard ist now most probably hidden behind the browser

src/gui/wizard/owncloudwizard.cpp

@@ -38,6 +38,7 @@
 #include <QtCore>
 #include <QtGui>
 #include <QMessageBox>
+#include <owncloudgui.h>
 
 #include <cstdlib>
 
@@ -212,6 +213,7 @@ void OwncloudWizard::successfulStep()
         break;
     }
 
+    ownCloudGui::raiseDialog(this);
     next();
 }