don't include log items for deleted issues in timeline (fixes issue #2325)
don't include log items for deleted issues in timeline (fixes issue #2325)

LogosLabs/thebuggenie,SysBind/thebuggenie,SysBind/thebuggenie,JonathanRH/thebuggenie,azaghal/thebuggenie,deshion/thebuggenie,LogosLabs/thebuggenie,SamMousa/thebuggenie,nrensen/thebuggenie,azaghal/thebuggenie,Rvanlaak/thebuggenie,nrensen/thebuggenie,SamMousa/thebuggenie,milkyway-git/thebuggenie,azaghal/thebuggenie,hurie/thebuggenie,thebuggenie/thebuggenie,praveenscience/thebuggenie,SysBind/thebuggenie,hurie/thebuggenie,gabor-udvari/thebuggenie,JonathanRH/thebuggenie,praveenscience/thebuggenie,milkyway-git/thebuggenie,Rvanlaak/thebuggenie,nrensen/thebuggenie,deshion/thebuggenie,thebuggenie/thebuggenie,thebuggenie/thebuggenie,deshion/thebuggenie,JonathanRH/thebuggenie,gabor-udvari/thebuggenie,milkyway-git/thebuggenie,Rvanlaak/thebuggenie,hurie/thebuggenie,LogosLabs/thebuggenie,gabor-udvari/thebuggenie,JonathanRH/thebuggenie,gabor-udvari/thebuggenie,praveenscience/thebuggenie,thebuggenie/thebuggenie,nrensen/thebuggenie,thebuggenie/thebuggenie,milkyway-git/thebuggenie,praveenscience/thebuggenie,SamMousa/thebuggenie,Rvanlaak/thebuggenie,LogosLabs/thebuggenie,hurie/thebuggenie,SamMousa/thebuggenie,deshion/thebuggenie,azaghal/thebuggenie,SysBind/thebuggenie