title: Dia export resolution too small
body: <p>I am trying to export a diagram to a format I can load into a wiki tool called 'confluence'. 
  The resolution of any export format or even the .dia save file is so small, that when I insert the image it is too small to be seen. When I try to enlarge it, it is blurry. </p>
  
  <p>How do I increase the resolution of Dia save files or Dia exports? </p>
  
  <p>Version: 0.97.2</p>