Fixed class selectors for sidenav
Fixed class selectors for sidenav

- specifically for in-API sidenav

ezimuel/zf-apigility-admin,guliano/zf-apigility-admin,jguittard/zf-apigility-admin,gartner/zf-apigility-admin,gartner/zf-apigility-admin,jguittard/zf-apigility-admin,ezimuel/zf-apigility-admin,ildanno/zf-apigility-admin,ildanno/zf-apigility-admin,guliano/zf-apigility-admin,ezimuel/zf-apigility-admin