show resend password link

resend password link was not visible bcz of typo mistake. 
It was allowing to non-admin ONLY. Now the link will be available for admin ONLY

Author: salimkamboh

views/admin/index.php

@@ -117,7 +117,7 @@
             'template' => '{switch} {resend_password} {update} {delete}',
             'buttons' => [
                 'resend_password' => function ($url, $model, $key) {
-                    if (!$model->isAdmin) {
+                    if ($model->isAdmin) {
                         return '
                     <a data-method="POST" data-confirm="' . Yii::t('user', 'Are you sure?') . '" href="' . Url::to(['resend-password', 'id' => $model->id]) . '">
                     <span title="' . Yii::t('user', 'Generate and send new password to user') . '" class="glyphicon glyphicon-envelope">