title: Filter issues by the user who closed them
body: <p>I have started using Jira just recently and I am having trouble with the Issue Navigator.
  I want to filter the issues so that the list shows only those that were closed by a specific user. I get to filter the issues by their status and/or resolution but not by the user that last updated them (that would be, the one that closed them).</p>
  
  <p>I'm sure the answer is obvious but I can't seem to find out how to do it!!</p>