Fields shown in chant search results should depend on the field searched and/or the field matching query

Currently, the same fields for chants matching a query are shown:

(For a "global" search -- a search across all manuscripts on CU -- a "Manuscript" column is also added, and there is a slightly different display for volpiano searches).

We should make sure that the field being searched (or for All Text Search, the field of the chant that matches the query) always shows up in the search results.

Start by locating the chant search-results rendering and the logic that identifies the searched or matching field. Compare regular, global, and volpiano result displays. Done means the relevant field always appears for the matching chant, including All Text Search results.

Written by the indexing model from the issue text.