Added: \eZ\Publish\SPI\Persistence\Content\Location\Handler::loadSubtreeIds
Fixed: Added missing buildFieldType() method to SignalSlot\FieldTypeService
Added: Copy subtree implementation in Solr
Added: Move subtree implementation in Solr
Added: Move to trash implementation in Solr
Added: Recover from trash implementation in Solr
Changed: use full TrashItem in DeleteTrashItemSignal

For consistency with RecoverSignal
Changed: syncing Solr integration tests with the standard ones