/**
  * The default contructor of the SpecialUniversalExport class
  */
 function __construct()
 {
     parent::__construct('UniversalExport', 'universalexport-export', true);
     $this->oOutputPage = $this->getOutput();
     //Set up default parameters and metadata
     $this->aParams = BsConfig::get('MW::UniversalExport::ParamsDefaults');
     $this->aParams['webroot-filesystempath'] = BsCore::getMediaWikiWebrootPath();
     $this->aMetadata = FormatJson::decode(BsConfig::get('MW::UniversalExport::MetadataDefaults'), true);
     //Set up Black- and Whitelists
     $this->aCategoryWhitelist = BsConfig::get('MW::UniversalExport::CategoryWhitelist');
     $this->aCategoryBlacklist = BsConfig::get('MW::UniversalExport::CategoryBlacklist');
 }