minor: print the material type code in the tooltip

SVN: 23864

screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/client/web/client/application/detailviewers/heatmaps/WellTooltipGenerator.java

@@ -185,7 +185,7 @@ class WellTooltipGenerator implements HeatmapPresenter.IWellTooltipGenerator
         Material material = property.getMaterial();
         if (material != null)
         {
-            return material.getCode();
+            return material.getCode() + " (" + material.getMaterialType().getCode() + ")";
         } else
         {
             return property.tryGetAsString();