Adjust the on-wiki search rankings

[Daniel-Mietchen]

New feature description in words:

We should have a system of weighted parameters to consider when ranking search results.

TODOS:

• Identify available configuration options
• Modify as need
• Test
• Repeat

Considered Alternatives:

• Status quo

Checklist for this issue:

• Participants in discussion have been invited as assignees
• All fields of the issue have been filled
• Example fields have been removed
• The main MaRDI project has been assigned to this issue

[Daniel-Mietchen]

As a starting point, here is a ticket for tracking search-related issues on Wikidata: https://phabricator.wikimedia.org/T46529 .

[Daniel-Mietchen]

Perhaps useful: the variable wmgCirrusSearchRescoreProfile as used in https://phabricator.wikimedia.org/rOMWC6a3d3403ce76c258fac388730e4c3c632efd7ac8 .