Update docs

Author: BastianLedererIcinga

doc/05-Upgrading.md

@@ -11,9 +11,8 @@ If you are upgrading across multiple versions, make sure to follow the steps for
 
 **Breaking Changes**
 
-* The JSON/CSV-export for Hosts and Services now supports filtering for specific columns with the `?columns` parameter.
-  * The exported file will only contain the listed columns of the Host/Service, if the parameter is not set, all columns will be included.
-  * If a relation is entirely empty and would result in an empty JSON-object, the JSON-export will not create an object for it at all.
+* When using the `?columns` parameter to filter for specific columns and exporting to CSV/JSON, the exported file will only contain the listed columns of the Hosts/Services, if the parameter is not set, all columns will be included.
+* If a relation is entirely empty and would result in an empty JSON-object, the JSON-export will not create an object for it at all. (instead of `{"someKey":"someValue","emptyObject":{}}` we will now export `{"someKey":"someValue"}`)
 
 **Removed Features**
 

library/Icingadb/Web/Controller.php

@@ -22,8 +22,6 @@
 use Icinga\Module\Icingadb\Common\SearchControls;
 use Icinga\Module\Icingadb\Data\CsvResultSet;
 use Icinga\Module\Icingadb\Data\JsonResultSet;
-use Icinga\Module\Icingadb\Model\Host;
-use Icinga\Module\Icingadb\Model\Service;
 use Icinga\Module\Icingadb\Web\Control\GridViewModeSwitcher;
 use Icinga\Module\Icingadb\Web\Control\ViewModeSwitcher;
 use Icinga\Module\Icingadb\Widget\ItemTable\StateItemTable;