Speed up fuzzy search

[bm743]

Description

This uses the pg_trgm module to make fuzzy search faster using SQL queries. Returns similarity score instead of edit distance

Fixes #5282

Checklist

• Refactoring only
• Documentation only
• Fixture update only
• Bug fix
  • The relevant issue has been closed.
  • Further work is required.
• New feature
  • Relevant tests have been created and run.
  • Data was added to the fixture
    • Data was added via a patch in /t/data/fixture/patches/.
  • User-Facing Change
    • The user manual in /docs has been updated.
  • Any new Perl has been documented using perldoc.
  • Any new JavaScript has been documented using JSDoc.
  • Any new legacy JavaScript has been moved from /js to /js/source/legacy.

[lukasmueller]

Works like a charm! The new fuzzy search needs to be added to manage accessions user interface.