Gherkin workflows for desktop (#788)

* Add gherkin tests for page navigation links

- test that every page will load when navigating from any other page
- update snapshots

* Add gherkin workflows 2 - 5

- add test for Federal program officer key information and CTA
- add test for Community members key information and CTA
- add test for Send feedback
- add test for Join the Open Source community
- update snapshots

* Add gherkin tests for footer links

- add footerlinks feature gherkin file
- adds a comment to the hyphenizeString()
- adds keyword functions for footer
- adds data-cy tags to footer component
- updates snapshots

* Adds workflow to learn more about EO

* Add gherkin test for dataset links

- add data-cy tags to dataset sections
- modify Cy command functions names
- update snapshots

* Add cypress test to deploy_staging.yml

* Add working directory env

* Remove keywords.js from cypress test

* Add a Then step to all About and Footer tests

* Refactor step definitions

- use globalStepDefinitions
- rename keywords to commonSteps
- remove keyword from exclusion list

client/cypress/integration/common/helpers.js

@@ -0,0 +1,16 @@
+// Helper functions that need to be shared between both the src codebase
+// and the cypress tests
+
+/**
+ * This function will take a string and hyphenize it.
+ * For example:
+ * Whitehouse.gov => whitehouse-gov
+ * Privacy Policy => privacy-policy
+ *
+ * @param {string} string
+ * @return {string}
+ */
+export const hyphenizeString = (string) => {
+  return string.split(/\.| /).join('-').toLowerCase();
+};
+