Related: fdo#30763 fill in default user realname under GNOME3

i.e. recognize that gnome-shell is a gnome session
so we use gconfbackend for default settings
so that we get a default name filled in for FirstName, LastName
so that the author/editor properties of new documents gets filled in by default
   out of the box
so that the last-used position in odf files gets restored for that user

Change-Id: I6630866e64414e886c80abad1ca6200ffc25b378

vcl/unx/generic/desktopdetect/desktopdetector.cxx

@@ -111,8 +111,13 @@ static bool is_gnome_desktop( Display* pDisplay )
                     if( pProp && nType == nUTFAtom )
                     {
                         OString aWMName( (sal_Char*)pProp );
-                        if( aWMName.equalsIgnoreAsciiCase( "gnome-panel" ) )
+                        if (
+                            (aWMName.equalsIgnoreAsciiCase("gnome-shell")) ||
+                            (aWMName.equalsIgnoreAsciiCase("gnome-panel"))
+                           )
+                        {
                             ret = true;
+                        }
                     }
                     if( pProp )
                         XFree( pProp );