[Glitch] Add notifications when a reblogged status has been updated

Port front-end changes from 8f03b7a2fb to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/components/status_prepend.js

@@ -88,6 +88,14 @@ export default class StatusPrepend extends React.PureComponent {
           />
         );
       }
+    case 'update':
+      return (
+        <FormattedMessage
+          id='notification.update'
+          defaultMessage='{name} edited a post'
+          values={{ name: link }}
+        />
+      );
     }
     return null;
   }
@@ -115,6 +123,9 @@ export default class StatusPrepend extends React.PureComponent {
     case 'status':
       iconId = 'bell';
       break;
+    case 'update':
+      iconId = 'pencil';
+      break;
     };
 
     return !type ? null : (