title: dc.bar-chart margin and axis label size adjustment
body: <p>I found my yAxis label too big to be shown--it was truncated by the left border.</p>
  
  <p>I tried increasing the left margin, with no success. It seems that the label text is left-aligned. So increasing the margin only gets the label further away from the ticks text. </p>
  
  <p>Please see the attached screenshots. The one with wider gap is <a href="https://drive.google.com/file/d/0B_pl4WL362gPZ2djTnBIS0ktazA/view?usp=sharing" rel="nofollow">margin.left=70</a>. The other one is with <a href="https://drive.google.com/file/d/0B_pl4WL362gPZFJlV3FqYk9neW8/view?usp=sharing" rel="nofollow">margin.left=40</a>. No matter which case, the 'Expenditures' seems to be truncated on the left side.</p>
  
  <p>Is there anywhere in the dc.css that I can change this configuration?
  Thank you!!</p>