Problems when using Monocle without site packages installed

[mhsdesign]

related #101 #109

• \Sitegeist\Monocle\Controller\ApiController::getSitePackages returns an empty array (json []) wich will cause an error in the frontend validation as an object is expected {}
• \Sitegeist\Monocle\Service\PackageKeyTrait::getDefaultSitePackageKey returns false if no site package is available?
• \Sitegeist\Monocle\Fusion\FusionService::getFusionConfigurationForPackageKey doesnt use Neos.Neos.fusion.autoiInclude for non site packages and thus a request will fail as Neos.Fusion:Component is not available