title: how to get paginated select on slick + postgresql
body: <p>In a postgresql database, with slick 3, what's the best way to have pagination?</p>
  
  <ul>
  <li>get all rows and do pagination with scala (seems not very efficient) ?</li>
  <li>static query with limit and offset?</li>
  <li>is there any other way?</li>
  </ul>