FIX #9073 set null if no entities in where clause

apps/maarch_entreprise/documents_list_copies.php

apps/maarch_entreprise/documents_list_with_attachments.php

...rise/indexing_searching/documents_list_mlb_search_adv.php

apps/maarch_entreprise/loadNoteList.php

modules/avis/documents_list_with_avis.php

modules/entities/class/class_modules_tools_Abstract.php

modules/export_seda/export_seda_list.php

modules/visa/documents_list_with_signatory.php