title: Log stack traces in prod mode with Play applications
body: <p>When a Play application encounters a 500 error while running in Production mode, it will log the error like so:</p>
  
  <pre><code>[TIMESTAMP]: @[errorid]
  [TIMESTAMP]: Internal Server Error (500) for request GET /path-to-request
  [TIMESTAMP]: Execution exception (In /app/controllers/Controller.java around line 55)
  </code></pre>
  
  <p>No stack trace is included. Is it possible to configure Play so that stack trace is logged?</p>
  
  <p>Bonus question: is it possible to limit the size of stack traces in logs to, say, 20 lines each to prevent runaway log growth?</p>