Add custom support link

app/soapbox/components/media_gallery.js

@@ -7,6 +7,7 @@ import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
 import { connect } from 'react-redux';
 
 import { getSettings } from 'soapbox/actions/settings';
+import { getSoapboxConfig } from 'soapbox/actions/soapbox';
 import Blurhash from 'soapbox/components/blurhash';
 import Icon from 'soapbox/components/icon';
 import StillImage from 'soapbox/components/still_image';
@@ -263,9 +264,14 @@ class Item extends React.PureComponent {
 
 }
 
-const mapStateToMediaGalleryProps = state => ({
+const mapStateToMediaGalleryProps = state => {
+  const { links } = getSoapboxConfig(state);
+
+  return {
     displayMedia: getSettings(state).get('displayMedia'),
-});
+    links,
+  };
+};
 
 export default @connect(mapStateToMediaGalleryProps)
 @injectIntl
@@ -285,6 +291,7 @@ class MediaGallery extends React.PureComponent {
     onToggleVisibility: PropTypes.func,
     displayMedia: PropTypes.string,
     compact: PropTypes.bool,
+    links: ImmutablePropTypes.map,
   };
 
   static defaultProps = {
@@ -568,7 +575,7 @@ class MediaGallery extends React.PureComponent {
   }
 
   render() {
-    const { media, intl, sensitive, compact, inReview } = this.props;
+    const { media, intl, sensitive, compact, inReview, links } = this.props;
     const { visible } = this.state;
     const sizeData = this.getSizeData(media.size);
 
@@ -638,6 +645,8 @@ class MediaGallery extends React.PureComponent {
                     <Text theme='white' size='sm' weight='medium'>
                       {summary}
 
+                      {links.get('support') && (
+                        <>
                           {' '}
                           <FormattedMessage
                             id='status.in_review_summary.contact'
@@ -646,7 +655,7 @@ class MediaGallery extends React.PureComponent {
                               link: (
                                 <a
                                   className='underline text-inherit'
-                              href='/hello'
+                                  href={links.get('support')}
                                 >
                                   <FormattedMessage
                                     id='status.in_review_summary.link'
@@ -656,6 +665,8 @@ class MediaGallery extends React.PureComponent {
                               ),
                             }}
                           />
+                        </>
+                      )}
                     </Text>
                   </div>