FEAT #6431 delete left join on res_attachments in res_view_letterbox

apps/maarch_entreprise/documents_list_copies.php

apps/maarch_entreprise/documents_list_with_attachments.php

...rise/indexing_searching/documents_list_mlb_search_adv.php

modules/avis/documents_list_with_avis.php

modules/folder/documents_list_in_folder.php

modules/visa/class/class_modules_tools_Abstract.php

modules/visa/documents_list_with_signatory.php

sql/17_xx.sql

sql/structure.sql