erp5_officejs_ooffice: save filename for onlyoffice documents

bt5/erp5_officejs_ooffice/PathTemplateItem/web_page_module/gadget_ooffice_jio_presentation_view_js.js

@@ -46,6 +46,9 @@
           } else {
             doc = gadget.state.doc;
             doc.content_type = "application/x-asc-presentation";
+            if (!doc.filename) {
+              doc.filename = (doc.reference || doc.title || "default") + ".ppty";
+            }
             return gadget.jio_putAttachment(
               gadget.state.jio_key,
               "data",

bt5/erp5_officejs_ooffice/PathTemplateItem/web_page_module/gadget_ooffice_jio_spreadsheet_view_js.js

@@ -46,6 +46,9 @@
           } else {
             doc = gadget.state.doc;
             doc.content_type = "application/x-asc-spreadsheet";
+            if (!doc.filename) {
+              doc.filename = (doc.reference || doc.title || "default") + ".xlsy";
+            }
             return gadget.jio_putAttachment(
               gadget.state.jio_key,
               "data",

bt5/erp5_officejs_ooffice/PathTemplateItem/web_page_module/gadget_ooffice_jio_text_view_js.js

@@ -46,6 +46,9 @@
           } else {
             doc = gadget.state.doc;
             doc.content_type = "application/x-asc-text";
+            if (!doc.filename) {
+              doc.filename = (doc.reference || doc.title || "default") + ".docy";
+            }
             return gadget.jio_putAttachment(
               gadget.state.jio_key,
               "data",