GUI: Display an informative error message when saving to jIO fails

dream/platform/src/dream/Input_viewSimulation.js

@@ -87,6 +87,14 @@
           gadget.props.jio_key,
           "view_result"
         );
+      }, function(reason){
+        // Very likely, we exceeded the quota of the local storage.
+        // Let's handle it with a more informative message.
+        alert("Could not save simulation results.Please check the simulation parameters or try to delete some models.\n\nError was:" + reason);
+        return gadget.whoWantsToDisplayThisDocument(
+          gadget.props.jio_key,
+          "view"
+        );
       })
       .push(function (url) {
         return gadget.pleaseRedirectMyHash(url);