Add more linked 880 data to record displays

[ryan-jacobs]

This is a follow-up to #31.

In that issue we made sure that some critical 880 values were captured in the title/author keyword search. We still need to figure out how to properly represent this kind of data on the record displays.

VuFind is already doing a run-time (as opposed to index time) lookup of 880 title data, but that's it. There are many other parts of the record that may have linked 880 values, and these should be visible to end-users outside of the "All Staff" view.

[ryan-jacobs]

Capturing a couple of notes from #31 here for easy reference...

From me in early April:

So here's what I can see so far in terms of current VuFind support for the 880:

• 880 values are coming over the OAI connection and are making their way into the index. However, it's in a very generic way. The solr indexing logic captures everything between marc 100-900 (so including the 880) in a general allfields solr property. This means that searches against "All Fields" for those 880 strings will surface results.
• There is some 880 parsing logic used at display time, but it seems to be limited to an 880 alt title value at the top of they entry (see image below). This seems to have been implemented in VuFind PR#1895.

And from @AndyElliottCRL on April 14:

University of Chicago is showing the imprint (publisher) data (260 / 880 field combo) in

• https://catalog.lib.uchicago.edu/vufind/Record/473879
• https://catalog.lib.uchicago.edu/vufind/Record/12462226 not sure which is which here

We see the small Russian title (CRL got that going already) and the Russian version with "Imprint" label, that we don't have.

[AndyElliottCRL]

Adding example of title where MilCat parses and shows the Russian version of the corporate author, but VuFind does not.

Russian versions of authors not appearing:

Personal and Corporate Authors are present in 880 data seen in Staff View tab; here are some corps: 710: 880: