Prettify the Wizard

I created a nicer blue arrow by default and
use standard icons on X11 where possible.
Note that we still need an alternative solution
for mac.

Reviewed-by:thorbjorn

src/libs/utils/utils.qrc

 <RCC>
     <qresource prefix="/utils">
         <file>images/removesubmitfield.png</file>
+        <file>images/arrow.png</file>
     </qresource>
 </RCC>

src/libs/utils/wizard.cpp

@@ -113,9 +113,9 @@ LinearProgressWidget::LinearProgressWidget(WizardProgress *progress, QWidget *pa
     :
     QWidget(parent),
     m_dotsItemWidget(0),
-    m_disableUpdatesCount(0),
-    m_indicatorPixmap(QLatin1String(":/trolltech/styles/commonstyle/images/right-16.png"))
+    m_disableUpdatesCount(0)
 {
+    m_indicatorPixmap =  QIcon::fromTheme("go-next", QIcon(QLatin1String(":/utils/images/arrow.png"))).pixmap(16);
     m_wizardProgress = progress;
     m_mainLayout = new QVBoxLayout(this);
     m_itemWidgetLayout = new QVBoxLayout();