Merged in feature/doc_import (pull request #177)

integration of background processor

* integration part 1

* feature working

* fix mimetype issue

internal/document/init/create.go

@@ -82,7 +82,7 @@ func (s *Service) submitCreate(ctx context.Context, params *createDocumentParams
 			createid, err := s.cfg.GetDBQueries().CreateDocument(ctx, &repository.CreateDocumentParams{
 				Clientid: params.Key.ClientID,
 				Hash:     params.Hash,
-				BatchID:  nil,
+				BatchID:  params.Key.BatchID,
 			})
 			if err != nil {
 				return err