fix json tables saved as dictionnary
fix json tables saved as dictionnary

This was happening when you unset an entry in an array.
cf. http://stackoverflow.com/questions/3869129/php-json-encode-as-object-after-php-array-unset

mohierf/fusioninventory-for-glpi,itinside/fusioninventory-for-glpi,fusioninventory/fusioninventory-for-glpi,itinside/fusioninventory-for-glpi,fusioninventory/fusioninventory-for-glpi,fusioninventory/fusioninventory-for-glpi,fusioninventory/fusioninventory-for-glpi,mohierf/fusioninventory-for-glpi,itinside/fusioninventory-for-glpi,TECLIB/fusioninventory-for-glpi,orthagh/fusioninventory-for-glpi,mohierf/fusioninventory-for-glpi,orthagh/fusioninventory-for-glpi,orthagh/fusioninventory-for-glpi,TECLIB/fusioninventory-for-glpi,orthagh/fusioninventory-for-glpi,dethegeek/fusioninventory-for-glpi,dethegeek/fusioninventory-for-glpi,TECLIB/fusioninventory-for-glpi,orthagh/fusioninventory-for-glpi,TECLIB/fusioninventory-for-glpi,TECLIB/fusioninventory-for-glpi,mohierf/fusioninventory-for-glpi,mohierf/fusioninventory-for-glpi,TECLIB/fusioninventory-for-glpi,dethegeek/fusioninventory-for-glpi,fusioninventory/fusioninventory-for-glpi,dethegeek/fusioninventory-for-glpi,itinside/fusioninventory-for-glpi,mohierf/fusioninventory-for-glpi,fusioninventory/fusioninventory-for-glpi,itinside/fusioninventory-for-glpi