Testing out some HAL
Started on HAL in tickets
Reverted limit back to 100
 - parseInt req.query.page and req.query.limit
parseInt req.query.page and req.query.limit to not operate on strings.
Added conditional HAL links next and previous.
Changed _embedded.retrospectives to a array of objects.

Fixed some smaller bugs with _links.

Pop away the last result when we receive > limit results.
Changed _embedded.tickets to be a array of objects.

Fixed some bugs with _links.
Look for tickets in response._embedded.tickets.
Look for retrospectives in response._embedded.retrospectives