adjust silex event values for consistency with Symfony2
adjust silex event values for consistency with Symfony2

JPry/Silex,SanderKnape/Silex,Xephi/Silex,mathroc/Silex,plotek/Silex,mmauri04/Silex,fhinkel/Silex,arduanov/Silex,mathroc/Silex,lokhman/Silex,fabpot/Silex,akucherevskiy/developex_test,jdreesen/Silex,RayRutjes/Silex,silexphp/Silex,peterkokot/Silex,naderman/Silex,akucherevskiy/developex_test,romainneutron/Silex,stof/Silex,romainneutron/Silex,stof/Silex,fhinkel/Silex,GromNaN/Silex,Tobion/Silex,plotek/Silex,Tobion/Silex,naderman/Silex,peterkokot/Silex,mmauri04/Silex,fabpot/Silex,RayRutjes/Silex,cesarmarinhorj/Silex,SpacePossum/Silex,GromNaN/Silex,JPry/Silex,cgsmith/Silex,Tobion/Silex,lyrixx/Silex,tcx1000/Silex,CarsonF/Silex,lokhman/Silex,tcx1000/Silex,Incognito/silex-fork,arduanov/Silex,SpacePossum/Silex,Incognito/silex-fork,SanderKnape/Silex,mTorres/Silex,lyrixx/Silex,cesarmarinhorj/Silex,CarsonF/Silex,beealone/Silex,cgsmith/Silex,lyrixx/Silex,akucherevskiy/developex_test,stof/Silex,GromNaN/Silex,mTorres/Silex,Seldaek/Silex,romainneutron/Silex,CarsonF/Silex,gencer/Silex,beealone/Silex,peterkokot/Silex,Xephi/Silex,naderman/Silex,Seldaek/Silex,jdreesen/Silex