Support optional session invalidation on logout
Support optional session invalidation on logout

arduanov/Silex,mathroc/Silex,beealone/Silex,mathroc/Silex,plotek/Silex,beealone/Silex,silexphp/Silex,cgsmith/Silex,mTorres/Silex,gencer/Silex,fhinkel/Silex,lokhman/Silex,jdreesen/Silex,romainneutron/Silex,lokhman/Silex,fhinkel/Silex,mmauri04/Silex,jdreesen/Silex,fabpot/Silex,romainneutron/Silex,cesarmarinhorj/Silex,plotek/Silex,romainneutron/Silex,fabpot/Silex,mTorres/Silex,Xephi/Silex,arduanov/Silex,Xephi/Silex,cgsmith/Silex,cesarmarinhorj/Silex,mmauri04/Silex