Merge branch 'MDL-53770-master' of git://github.com/marinaglancy/moodle

mod/lti/classes/plugininfo/ltisource.php

@@ -69,4 +69,13 @@ class ltisource extends base {
             $ADMIN->add($parentnodename, $settings);
         }
     }
+
+    /**
+     * Should there be a way to uninstall the plugin via the administration UI.
+     *
+     * @return bool
+     */
+    public function is_uninstall_allowed() {
+        return true;
+    }
 }