Ensure that subject fields rank above publication fields in Solr result

[ruthtillman]

Problem: it appears that sometimes subject fields don't rank more highly (in keyword search) than the data in publication fields.

WDDLL

• searches for terms which happen to be in publication rank higher than ones which happen to be in subject.

Details

This search includes a keyword search for Germany topographic (showing up in URL):

https://catalog.libraries.psu.edu/catalog?op=AND&all_fields=germany+topographic&title=&author=&subject=&identifiers=&series=&publisher=&f_inclusive%5Bformat%5D%5B%5D=Maps%2C+Atlases%2C+Globes&range%5Bpub_date_itsi%5D%5Bbegin%5D=&range%5Bpub_date_itsi%5D%5Bend%5D=&sort=score+desc%2C+pub_date_itsi+desc%2C+title_sort+asc&search_field=advanced&commit=Search

however, https://catalog.libraries.psu.edu/catalog/25792835 (which only has Germany in publication field)

is ranking more highly than things like: https://catalog.libraries.psu.edu/catalog/3749600

and many others with Germany in subject fields.

Also... should we add genre to the ranking, kind of low but still above all keyword?