Add ability to configure default menu options #278
In the CMF, menu's aren't created programatically. With the current code, it means the menu options needs to be saved in the database in order to be set on the menu items.
It would be much better if we could configure this in the application settings. This PR implements a very simple DefaultOptionsExtensions, setting the default options based on a configured set of options.
This extension is automatically registered as soon as at least one option is configured.
Related issue: symfony-cmf/menu-bundle#128