- Removed links to the gov uk stylesheets

- Deleted /stylesheets folder
- Removed sass build from gulpfile
- Changed gov links to usa links
- Changed other govuk styles, like breadcrumbs
- Changed name of uk_components file to us_components
- Fixed a few tests that broke on account of the changes

paas-failwhale/index.html

@@ -90,7 +90,7 @@
             We’re performing some essential updates. Notify will be back shortly.
           </p>
           <p class="govuk-body">
-            Please check the <a class="govuk-link govuk-link--no-visited-state"
+            Please check the <a class="usa-link"
               href="https://status.notifications.service.gov.uk/">status page</a> for updates.
           </p>
         </div>
@@ -106,7 +106,7 @@
           <h2 class="usa-sr-only">Support links</h2>
           <div class="govuk-footer__meta-custom">
             Built by the <a href="https://www.gsa.gov/about-us/organization/federal-acquisition-service/technology-transformation-services/tts-solutions"
-              class="govuk-footer__link">Technology Transformation Services</a>
+              class="usa-link">Technology Transformation Services</a>
           </div>
 
           <svg role="presentation" focusable="false" class="govuk-footer__licence-logo"
@@ -116,7 +116,7 @@
           </svg>
           <span class="govuk-footer__licence-description">
             All content is available under the
-            <a class="govuk-footer__link"
+            <a class="usa-link"
               href="https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/" rel="license">Open
               Government Licence v3.0</a>, except where otherwise stated
           </span>