feat: remove loading on editor pages (#250)

Because we are moving the v2 editor pages to be "fake" modals, which have no z-index, we need to discard the course authoring "loading" wheel for the header and footer. We also need to bump the version of f-l-c-c to bring in the new editor changes.

src/setupTest.js

@@ -4,6 +4,22 @@ import '@testing-library/jest-dom';
 import '@testing-library/jest-dom/extend-expect';
 import ReactDOM from 'react-dom';
 
+/* need to mock window for tinymce on import, as it is JSDOM incompatible */
+
+Object.defineProperty(window, 'matchMedia', {
+  writable: true,
+  value: jest.fn().mockImplementation(query => ({
+    matches: false,
+    media: query,
+    onchange: null,
+    addListener: jest.fn(), // Deprecated
+    removeListener: jest.fn(), // Deprecated
+    addEventListener: jest.fn(),
+    removeEventListener: jest.fn(),
+    dispatchEvent: jest.fn(),
+  })),
+});
+
 // Modal creates a portal.  Overriding ReactDOM.createPortal allows portals to be tested in jest.
 ReactDOM.createPortal = node => node;