Added new template hook for application settings page

app/Template/config/application.php

@@ -30,6 +30,8 @@
     <?= $this->form->label(t('Custom Stylesheet'), 'application_stylesheet') ?>
     <?= $this->form->textarea('application_stylesheet', $values, $errors) ?>
 
+    <?= $this->hook->render('template:config:application', array('values' => $values, 'errors' => $errors)) ?>
+
     <div class="form-actions">
         <input type="submit" value="<?= t('Save') ?>" class="btn btn-blue">
     </div>

app/Validator/UserValidator.php

@@ -17,10 +17,10 @@ class UserValidator extends Base
     /**
      * Common validation rules
      *
-     * @access private
+     * @access protected
      * @return array
      */
-    private function commonValidationRules()
+    protected function commonValidationRules()
     {
         return array(
             new Validators\MaxLength('role', t('The maximum length is %d characters', 25), 25),

doc/plugin-hooks.markdown

@@ -159,6 +159,7 @@ List of template hooks:
 | `template:auth:login-form:before`    | Login page (top)                                   |
 | `template:auth:login-form:after`     | Login page (bottom)                                |
 | `template:config:sidebar`            | Sidebar on settings page                           |
+| `template:config:application `       | Application settings form                          |
 | `template:config:integrations`       | Integration page in global settings                |
 | `template:dashboard:sidebar`         | Sidebar on dashboard page                          |
 | `template:export:sidebar`            | Sidebar on export pages                            |