Feature missing and other problems

[gperdomor]

Hi, i start using this bundle and i fix some issues that i notice but some problems are still present...

For example:

• The allowed IPs are hardcoded, what happed if my ip change?

• In the MaintenanceListener the validation of autorization parameters don't work as expected, for example, using:

  lexik_maintenance:
  authorized:
      query: { foo: bar }

  When you lock the app and open http://app_domain/?foo=barrrrrr the listener not throw the exception