Add external link icons & all outstanding changes from Living copy (#1173)

* Refactor Footer component

- Make Footer component align to normal folder structure
- Make links in Footer use LinkTypeWrapper, which will allow icon to be added to all external links in one place

* Add Trussworks link to LinkTypeWrapper

* Add icon to SurveyButton comp

* Add launch icon to About page cards

* Add launch icon to FederalRegister link

* Refactor Methodology page

- Add Source and Available for fields to dataset Cards
- refactor data structure for dataset Cards to handle more than 1 source
- update constants file
- modify SASS for source list items
- update snapshots

* Add copy changes; How you can help and territories

* Update methodology section with copy changes

* Swap out all email links with <LinkTypeWrapper>

- update tests

client/src/components/SurveyButton/SurveyButton.module.scss

@@ -15,12 +15,17 @@
     @include u-height(6);
     z-index: 2;
 
-    @include u-text("gray-90");
+    @include u-text("blue-70v");
     @include u-bg("yellow-20v");
 
     &:hover {
       @include u-bg("yellow-20");
       @include u-text("gray-90");
     }
+
+    .launchIcon {
+      height: .8rem;
+      // @include u-margin-bottom('neg-05');
+    }
   }
 }

client/src/components/SurveyButton/SurveyButton.module.scss.d.ts

@@ -2,6 +2,7 @@ declare namespace SurveyButtonNamespace {
     export interface ISurveyButtonScss {
         surveyButton: string;
         surveyButtonContainer: string;
+        launchIcon: string;
     }
   }
 

client/src/components/SurveyButton/SurveyButton.tsx

@@ -6,6 +6,9 @@ import * as styles from './SurveyButton.module.scss';
 import * as CONTACT_COPY from '../../data/copy/contact';
 import J40MainGridContainer from '../J40MainGridContainer';
 
+// @ts-ignore
+import launchIcon from '/node_modules/uswds/dist/img/usa-icons-bg/launch--blue-70v.svg';
+
 export const onClickHandler = () => {
   Object.assign(document.createElement('a'), {target: '_blank', href: 'https://www.surveymonkey.com/r/cejst-survey'}).click();
 };
@@ -19,6 +22,11 @@ const SurveyButton = () => {
         className={styles.surveyButton}
         onClick={() => onClickHandler()}>
         {intl.formatMessage(CONTACT_COPY.PAGE_INTRO.SURVEY_TEXT)}
+        <img
+          className={styles.launchIcon}
+          src={launchIcon}
+          alt={'launch icon'}
+        />
       </Button>
     </J40MainGridContainer>
   );

client/src/components/SurveyButton/__snapshots__/SurveyButton.test.tsx.snap

@@ -12,6 +12,10 @@ exports[`rendering of the SurveyButton checks if component renders 1`] = `
       type="button"
     >
       Help improve the site & data
+      <img
+        alt="launch icon"
+        src="test-file-stub"
+      />
     </button>
   </div>
 </DocumentFragment>