Refactoring/rewrite of modal boxes handling

app/Template/group/dissociate.php

@@ -4,9 +4,9 @@
 <div class="confirm">
     <p class="alert alert-info"><?= t('Do you really want to remove the user "%s" from the group "%s"?', $user['name'] ?: $user['username'], $group['name']) ?></p>
 
-    <div class="form-actions">
-        <?= $this->url->link(t('Yes'), 'GroupListController', 'removeUser', array('group_id' => $group['id'], 'user_id' => $user['id']), true, 'btn btn-red') ?>
-        <?= t('or') ?>
-        <?= $this->url->link(t('cancel'), 'GroupListController', 'users', array('group_id' => $group['id']), false, 'close-popover') ?>
-    </div>
+    <?= $this->modal->confirmButtons(
+        'GroupListController',
+        'removeUser',
+        array('group_id' => $group['id'], 'user_id' => $user['id'])
+    ) ?>
 </div>