SSDM-3390 : Better feedback for selectable grid.

SVN: 36190

openbis_standard_technologies/dist/core-plugins/eln-lims/1/as/webapps/eln-lims/html/lib/grid/js/Grid.js

@@ -21,7 +21,7 @@ $.extend(Grid.prototype, {
 			thisGrid.renderColumnDropdown();
 			thisGrid.renderDropDownOptions();
 			
-			if(thisGrid.rowClickListeners.length > 0) {
+			if(thisGrid.rowClickListeners && thisGrid.rowClickListeners.length > 0) {
 				thisGrid.panel.addClass("fuelux-selectable");
 			}