Add `listRelation/relation` to display in CBSS records

[wlpotter]

The new data output for the CBSS transform creates relation elements. We would like to include these in the HTML display (though should discuss the best place to put them, and how to format them).

Could make use of the human-readable desc element, though what to put after (the title? formatted bibl?) I'm not sure about.

The below gives a list of what these all will look like in the XML, of course with the URIs in the active, passive, or mutual attributes:

<relation xmlns="http://www.tei-c.org/ns/1.0" type="see-also" ref="http://syriaca.org/taxonomy/review-of" active="" passive="">
  <desc>Review of</desc>
</relation>
<relation xmlns="http://www.tei-c.org/ns/1.0" type="see-also" ref="http://id.loc.gov/ontologies/bibframe/partOf" active="" passive="">
  <desc>Part of</desc>
</relation>
<relation xmlns="http://www.tei-c.org/ns/1.0" type="see-also" ref="http://id.loc.gov/ontologies/bibframe/accompaniedBy" mutual="">
  <desc>Companion with</desc>
</relation>
<relation xmlns="http://www.tei-c.org/ns/1.0" type="see-also" ref="http://id.loc.gov/ontologies/bibframe/precededBy" active="" passive="">
  <desc>Preceded by</desc>
</relation>
<relation xmlns="http://www.tei-c.org/ns/1.0" type="see-also" ref="http://id.loc.gov/ontologies/bibframe/succeededBy" active="" passive="">
  <desc>Succeeded by</desc>
</relation>
<relation xmlns="http://www.tei-c.org/ns/1.0" type="see-also" ref="http://id.loc.gov/ontologies/bibframe/otherEdition" mutual="">
  <desc>Other edition</desc>
</relation>