adding doc links

Former-commit-id: c861eae329baab05b8ef7bc9d630f5f6f7cf3900

kadmos/vistoms/templates/VISTOMS_sessions.html

@@ -32,6 +32,7 @@
                 alert("OOPS! VISTOMS unfortunately does not work properly on " + bowser.name + ". Please use a different browser to see its awesome visualization features!")
 			}
+			/* see docs: https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage */
 			if (window && window.localStorage)
 			{
 				var storage = window.localStorage;