title: Eclipse: force project not to show errors for a js directory
body: <p>I have a web project that uses a number of 3rd party js libraries. Since they are optimized Eclipse shows that there are errors in these files. I'd like to configure eclipse to ignore certain js directories for error processing and validation.</p>
  
  <p>I think I now have it configured to ignore validation via the validation settings under Project > Properties > Validation > Client Side JavaScript > Settings. I've added an exclude rule for my 3rd party lib directory. My issue is that it still shows errors under Markers > Javascript Problems.</p>
  
  <p>Any help would be appreciated, thank you!</p>