Merge branch 'MDL-72639' of git://github.com/paulholden/moodle

admin/renderer.php

@@ -220,7 +220,7 @@ class core_admin_renderer extends plugin_renderer_base {
             $output .= $this->container_end();
         }
 
-        $button = new single_button($continueurl, get_string('upgradestart', 'admin'), 'get');
+        $button = new single_button($continueurl, get_string('upgradestart', 'admin'), 'get', true);
         $button->class = 'continuebutton';
         $output .= $this->render($button);
         $output .= $this->footer();

lib/outputcomponents.php

@@ -855,6 +855,7 @@ class single_button implements renderable {
      * @param moodle_url $url
      * @param string $label button text
      * @param string $method get or post submit method
+     * @param bool $primary whether this is a primary button, used for styling
      * @param array $attributes Attributes for the HTML button tag
      */
     public function __construct(moodle_url $url, $label, $method='post', $primary=false, $attributes = []) {