Showing yellow locationbar on secured page in default linux theme.

- linux default theme was the only one theme, where you couldn't
  recognize whether you are on secured on normal page

  it now shows light yellow background of locationbar

bin/themes/linux/main.css

@@ -113,6 +113,11 @@
     qproperty-fixedheight: 27;
 }
 
+#locationbar[secured="true"]
+{
+    background-color: #ffffbc;
+}
+
 #locationbar-bookmarkicon
 {
     margin-bottom: 2px;

src/navigation/locationbar.cpp

@@ -236,6 +236,10 @@ void LocationBar::setPrivacy(bool state)
     m_siteIcon->setProperty("secured", state);
     m_siteIcon->style()->unpolish(m_siteIcon);
     m_siteIcon->style()->polish(m_siteIcon);
+
+    setProperty("secured", state);
+    style()->unpolish(this);
+    style()->polish(this);
 }
 
 void LocationBar::dropEvent(QDropEvent* event)