MDL-75401 mod_data: add sticky footers

mod/data/classes/template.php

@@ -215,6 +215,15 @@ class template {
         $this->tags = $matches['tags'];
     }
 
+    /**
+     * Return the current template name.
+     *
+     * @return string the template name
+     */
+    public function get_template_name(): string {
+        return $this->templatename;
+    }
+
     /**
      * Generate the list of action icons.
      *