Fix chicken flying
Fix chicken flying

The gravity might not be correct but my rough timing (with a stopwatch) seems to be close.

Merge branch 'master' into patch-1

Merge branch 'master' into patch-1

Merge branch 'master' into patch-1

johnsoch/cuberite,nounoursheureux/MCServer,HelenaKitty/EbooMC,mc-server/MCServer,tonibm19/cuberite,birkett/cuberite,birkett/cuberite,Schwertspize/cuberite,HelenaKitty/EbooMC,ionux/MCServer,ionux/MCServer,nounoursheureux/MCServer,marvinkopf/cuberite,tonibm19/cuberite,birkett/MCServer,Altenius/cuberite,bendl/cuberite,Fighter19/cuberite,birkett/cuberite,nounoursheureux/MCServer,Schwertspize/cuberite,birkett/cuberite,nounoursheureux/MCServer,Frownigami1/cuberite,kevinr/cuberite,mc-server/MCServer,birkett/MCServer,SamOatesPlugins/cuberite,nounoursheureux/MCServer,Haxi52/cuberite,Fighter19/cuberite,Frownigami1/cuberite,mc-server/MCServer,marvinkopf/cuberite,birkett/MCServer,nounoursheureux/MCServer,SamOatesPlugins/cuberite,tonibm19/cuberite,kevinr/cuberite,Frownigami1/cuberite,bendl/cuberite,johnsoch/cuberite,HelenaKitty/EbooMC,Haxi52/cuberite,SamOatesPlugins/cuberite,kevinr/cuberite,marvinkopf/cuberite,Altenius/cuberite,QUSpilPrgm/cuberite,mc-server/MCServer,HelenaKitty/EbooMC,Schwertspize/cuberite,Haxi52/cuberite,QUSpilPrgm/cuberite,Haxi52/cuberite,Schwertspize/cuberite,tonibm19/cuberite,Fighter19/cuberite,ionux/MCServer,bendl/cuberite,johnsoch/cuberite,marvinkopf/cuberite,marvinkopf/cuberite,QUSpilPrgm/cuberite,Haxi52/cuberite,SamOatesPlugins/cuberite,birkett/cuberite,Frownigami1/cuberite,QUSpilPrgm/cuberite,Altenius/cuberite,johnsoch/cuberite,ionux/MCServer,tonibm19/cuberite,SamOatesPlugins/cuberite,kevinr/cuberite,ionux/MCServer,mc-server/MCServer,bendl/cuberite,Altenius/cuberite,Fighter19/cuberite,mc-server/MCServer,tonibm19/cuberite,Altenius/cuberite,Fighter19/cuberite,birkett/MCServer,QUSpilPrgm/cuberite,Schwertspize/cuberite,marvinkopf/cuberite,HelenaKitty/EbooMC,kevinr/cuberite,Haxi52/cuberite,ionux/MCServer,kevinr/cuberite,birkett/MCServer,Fighter19/cuberite,birkett/cuberite,QUSpilPrgm/cuberite,Frownigami1/cuberite,bendl/cuberite,birkett/MCServer,johnsoch/cuberite