Fix all failing cypress tests (#774)

* Fix all failing cypress tests

- update test name to be more appropriate
- update download packet tests to CDN
- update data-cy tag on About heading

* Update snapshot

client/cypress/integration/LegacyTests/allLinks.spec.js

@@ -0,0 +1,22 @@
+// / <reference types="Cypress" />
+
+describe('Do all the English pages have all links with a defined href attribute?', () => {
+  const pages = [
+    '/',
+    'cejst',
+    'methodology',
+    'contact',
+  ];
+
+  pages.forEach((page) => {
+    it(`test all href attr on ${page} page`, () => {
+      cy.visit(page);
+
+      // Checks to make sure all a tags have an href:
+      cy.get('a').each(($a) => {
+        const message = $a.text();
+        expect($a, message).to.have.attr('href').not.contain('undefined');
+      });
+    });
+  });
+});