[i18n] Add missing call to _cw._ to actually translate add button's label

views/archiveunit.py

@@ -43,12 +43,13 @@ def add_links_with_custom_arguments(seq, rtype, role, extraurlparams, sub_unit_t
     and `role` but with an extra argument in url params, given through the `param_defs` list of
     3-uple defining argument's (name, value, link label).
     """
+    _ = seq._cw._
     links = []
     urlparams = extraurlparams.copy()
     for argument, value, label in sub_unit_types:
         urlparams[argument] = value
         link = add_subobject_link(seq, rtype, role, urlparams,
-                                  msg=label, klass='')
+                                  msg=_(label), klass='')
         if link:
             links.append(link)
     return links