On discussion with Robert, also use desaturated icons for layer type icons. Updated stop rendering icon with one contributed by Robert.

git-svn-id: http://svn.osgeo.org/qgis/trunk@15455 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: timlinux

images/images.qrc

@@ -170,6 +170,9 @@
     <file>themes/default/mIconProjectionProblem.png</file>
     <file>themes/default/mIconProperties.png</file>
     <file>themes/default/mIconPyramid.png</file>
+    <file>themes/default/mIconStopRendering.png</file>
+    <file>themes/default/mIconRenderingEnabled.png</file>
+    <file>themes/default/mIconRenderingDisabled.png</file>
     <file>themes/default/mIconSymbology.png</file>
     <file>themes/default/mIconTableLayer.png</file>
     <file>themes/default/mIconUnknownLayerType.png</file>