HUE-1541 [core] SAML logout
[pig] Report error when submittion fails

Also put the error in the Hue logs
[beeswax] Make sure IE doesn't cache ajax requests
Preparing for Hadoop 2.1.0
HUE-1575 [beeswax] expand_exception attribute 'message' fix

Romain: more user friendly exception, just showing up errorMessage
HUE-1561 [beeswax] HiveServer2 0.11 async query support
HUE-1573 [beeswax] Save query button fails

Adding error in logs now instead of failing silently
HUE-1417 [oozie] Check for valid action name