Fix error which occur after fresh installation of SyliusStandard

 ```
request.CRITICAL: Uncaught PHP Exception Twig_Error_Syntax: "An exception has been thrown during the compilation of a template ("You must add CmfCreateBundle to the assetic.bundle config to use the {% stylesheets %} tag in CmfCreateBundle::includecssfiles.html.twig. (currently enabled: SyliusWebBundle)") 
```