Fix some cypress tests

client/cypress/fixtures/mocks.js

@@ -1,5 +1,5 @@
 const selectedClass = {
-  id: 'selectedClassId',
+  id: btoa('SchoolClassNode:selectedClassId'),
   name: 'Moordale',
   readOnly: false,
   code: 'XXXX',

client/cypress/integration/frontend/read-only/portfolio.spec.js

@@ -3,20 +3,16 @@ import {getMinimalMe} from '../../../support/helpers';
 const getOperations = ({readOnly = false, classReadOnly = false}) => ({
   MeQuery: getMinimalMe({readOnly, classReadOnly}),
   ProjectsQuery: {
-    projects: {
-      edges: [
-        {
-          node: {
-            id: 'projectId',
-            final: false,
-            student: {
-              id: btoa('PrivateUserNode:1'),
-            },
-            entriesCount: 3,
-          },
+    projects: [
+      {
+        id: 'projectId',
+        final: false,
+        student: {
+          id: btoa('PrivateUserNode:1'),
         },
-      ],
-    },
+        entriesCount: 3,
+      },
+    ],
   },
 });