Feature - Related jobs

At the bottom of a jobs listing, it would be great to have the option to show/hide related jobs - that are either matched by keyword, location, category or job type (or some combination of all of these).

And within the related jobs section, be able to limit the number of results that are returned - e.g. 3, 5, 10.

Thanks.

#### What I Expected To Happen

#### What Happened Instead

#### Steps to Reproduce the Bug

No files, tests, or entry points are named. Start by locating the job listing rendering and related job query logic, then determine how keyword, location, category, and job type matching and result limits should be configured. Done means related jobs can be shown or hidden and limited to the requested number of results.

Written by the indexing model from the issue text.