Second part of resolution to Issue #75
Added missing Cerebrate config section to resolved the following error:
```
warning: Warning (2): in_array() expects parameter 2 to be array, null given in [/var/www/cerebrate/src/Controller/Component/Navigation/sidemenu.php, line 130]
Request URL: /users/login
Referer URL: http://127.0.0.1:8000/users/login?redirect=%2F
Client IP: 127.0.0.1
```
- set the baseurl via /config/app_local.php
- simple set the baseurl to an absolute path or to a relative path if you with to use a subdirectory without setting a baseurl
- If no baseurl is set above, Cerebrate will also check the CEREBRATE_BASEURL environment variable
Luciano Righetti