title: PyCharm Code Inspection doesn't include PEP 8
body: <p>How do I get PyCharm 2.7 Code Inspection (under Code > Inspect Code) to include PEP 8 messages?</p>
  
  <p>In the Inspection settings I have "PEP 8 coding style violation" checked and the correct profile selected, but running the inspection does not include any PEP 8 violations.</p>
  
  <p>What am I doing wrong?</p>