Find source of queries

(cherry picked from commit 458392ef0d334173f65eac41eb23345e3201a024)

Checklist

• I have read the Contribution & Best practices Guide.
• My branch is up-to-date with the upstream master branch.
• The tests pass locally with my changes.

Short description of what this resolves/which issues does this fix?:

• Rails logs are inherently ambiguous about the source of a specific query, adding unnecessary difficulty when debugging or performance profiling queries.

Changes proposed in this pull request:

• Add a log entry, after each ActiveRecord entry, showing the current stack line that triggered the query.