Update cms-tools-ana.xml

Assigned DOIs #89 and amended field 538 as per discussion with @pamfilos 
`538 $y` is a new field, so we'd have to amend the data model.  What do you want to represent?  (MARC standard does not allow `$y` there.)  If you thought of using it to store configurable link label, then we can grab the title from correspending record. (This is valid for all fields where we do linking via `$w`, not only for `583`.)  So I think we can remove `$y` here and down below...