title: Replacing/removing the metric notations like thousands "k" abbreviation
body: <p>My areaspline chart has Y axis values up to approximately 6000. Highcharts automatically changes the "000" part on my Y axis for a "k".</p>
  
  <p>As I'm french and the site is meant to be in that same language, this "k" abbreviation won't make sense in my case and I'd like to have a casual "000" display instead of it.</p>
  
  <p>Is this possible? How?</p>