Set options throw service

[zeldax54]

Hello @shakaran i have problems with options (not load from config.yml) but find my way setting the otptions throw service

    $c=$this->get('avanzu_admin_theme.context_helper');
    $c->setOption('skin','skin-green-light');
    $c->setOption('collapsed_sidebar','true');

but only work the skin. Could you please tellme what is the correct way to do it?. Thanks for the bundle.

Symfony version 3.4.0
AdminThemeBundle dev-master

[kevinpapst]

See #217