modify slack integration icons

src/client/js/components/Admin/Common/AdminNavigation.jsx

@@ -28,8 +28,8 @@ const AdminNavigation = (props) => {
       case 'importer':                 return <><i className="icon-fw icon-cloud-upload"></i>    { t('Import Data') }</>;
       case 'export':                   return <><i className="icon-fw icon-cloud-download"></i>  { t('Export Archive Data') }</>;
       case 'notification':             return <><i className="icon-fw icon-bell"></i>            { t('External_Notification')}</>;
-      case 'slack-integration-legacy': return <><i className="fa fa-slack mr-2"></i>             { t('Legacy_Slack_Integration')}</>;
-      case 'slack-integration':        return <><i className="fa fa-slack mr-2"></i>             { t('slack_integration') }</>;
+      case 'slack-integration':        return <><i className="icon-fw icon-shuffle"></i>         { t('slack_integration') }</>;
+      case 'slack-integration-legacy': return <><i className="icon-fw icon-shuffle"></i>         { t('Legacy_Slack_Integration')}</>;
       case 'users':                    return <><i className="icon-fw icon-user"></i>            { t('User_Management') }</>;
       case 'user-groups':              return <><i className="icon-fw icon-people"></i>          { t('UserGroup Management') }</>;
       case 'search':                   return <><i className="icon-fw icon-magnifier"></i>       { t('Full Text Search Management') }</>;