Add beta site banner (#802)

* Add new BetaBanner and remove legacy Alerts

- add BetaBanner component and test
- update AboutCard test
- remove AlertWrapper component, copy and tests
- remove AlertWrapper from all pages
- add BetaBanner copy and intl
- update logo and color
- add styles using USWDS tokens to globals.scss

* Add Beta pill to header

- refactor Header to use Grid and USWDS
- refactor global.scss to use Grid and USWDS
- updates snapshots

* Move styles from global to modules

- move BetaBanner styles from global to modules
- move J40Header to a folder component and module styles
- add J40Header unit test
- add a design-system.scss file that allows USWDS styles in modules
- updates snapshots

* Update en.json file

* Trigger Build

* Add initial Spanish content

- add README for translation team
- add createSpanishJson script
- add initial version of es.json
- add a spanish string variable to test translation

* Add retry and timeout config to stalled test

* Remove redundant test cases for AboutCard

- update snapshot

* Update BetaBanner description

client/src/pages/methodology.tsx

@@ -2,7 +2,6 @@ import * as React from 'react';
 import {Grid} from '@trussworks/react-uswds';
 import {useIntl} from 'gatsby-plugin-intl';
 
-import AlertWrapper from '../components/AlertWrapper';
 import DatasetContainer from '../components/DatasetContainer';
 import DownloadPacket from '../components/DownloadPacket';
 import J40MainGridContainer from '../components/J40MainGridContainer';
@@ -22,10 +21,6 @@ const IndexPage = ({location}: MethodPageProps) => {
   return (
     <Layout location={location} title={intl.formatMessage(METHODOLOGY_COPY.PAGE.TILE)}>
 
-      <J40MainGridContainer>
-        <AlertWrapper showBetaAlert={true} showLimitedDataAlert={false}/>
-      </J40MainGridContainer>
-
       <J40MainGridContainer>
         <h1>{intl.formatMessage(METHODOLOGY_COPY.PAGE.HEADING)}</h1>
         <Grid row gap className={'j40-mb-5'}>