title: Exclude directory from intellij inspection, but not exclude from autocomplete
body: <p>As far as I know, the only way to exclude a directory is to mark it as excluded in project structure. However, this would make IntelliJ totally ignore the directory. Thus it will not appear in autocomplete options.</p>
  
  <p>I do not want this. I want exclusion from inspections but inclusion in everything else. Is this possible?</p>
  
  <p>I'm using Intellij 12.0.2. And, it's actually the bootstrap css and js failing the inspection.</p>