Move survey button to footer (#897)

* Move survey button to header

- remove SurveyFab component as it's no longer a FAB
- place button in heading
- add tests
- add pageStyles module

* Add retry and timeout to failing test

* Move survey button to bottom of page

* Fix surveyButton failing a11y

- udpate snapshots

* Align survey button to Contact nav link

client/src/data/copy/contact.tsx

@@ -23,7 +23,7 @@ export const PAGE_INTRO = defineMessages({
   },
   SURVEY_TEXT: {
     id: 'fab.survey.text',
-    defaultMessage: 'Take our survey!',
+    defaultMessage: `Tell us how we're doing`,
     description: 'text for floating action button',
   },
 });