tools (xml_tools): add fields's values when converting data form to dict

sat/tools/xml_tools.py

@@ -226,6 +226,8 @@ def dataForm2dataDict(form: data_form.Form) -> dict:
             ('var', 'name'),
             ('label', 'label'),
             ('value', 'value'),
+            # FIXME: we probably should have only "values"
+            ('values', 'values')
         ):
             value = getattr(form_field, src_name, None)
             if value: