Fixed dark oak and acacia placement.
Fixed dark oak and acacia placement.

Fixes #621.

nevercast/cuberite,HelenaKitty/EbooMC,bendl/cuberite,ionux/MCServer,kevinr/cuberite,thetaeo/cuberite,zackp30/cuberite,Frownigami1/cuberite,birkett/MCServer,thetaeo/cuberite,guijun/MCServer,Frownigami1/cuberite,SamOatesPlugins/cuberite,QUSpilPrgm/cuberite,MuhammadWang/MCServer,Altenius/cuberite,mjssw/cuberite,guijun/MCServer,johnsoch/cuberite,kevinr/cuberite,QUSpilPrgm/cuberite,nounoursheureux/MCServer,jammet/MCServer,Schwertspize/cuberite,nichwall/cuberite,Fighter19/cuberite,nicodinh/cuberite,birkett/cuberite,birkett/cuberite,jammet/MCServer,zackp30/cuberite,mmdk95/cuberite,nounoursheureux/MCServer,jammet/MCServer,Altenius/cuberite,Tri125/MCServer,marvinkopf/cuberite,nounoursheureux/MCServer,QUSpilPrgm/cuberite,nounoursheureux/MCServer,zackp30/cuberite,thetaeo/cuberite,nevercast/cuberite,Frownigami1/cuberite,Haxi52/cuberite,nichwall/cuberite,thetaeo/cuberite,guijun/MCServer,mjssw/cuberite,Haxi52/cuberite,electromatter/cuberite,mjssw/cuberite,nicodinh/cuberite,bendl/cuberite,Haxi52/cuberite,tonibm19/cuberite,SamOatesPlugins/cuberite,electromatter/cuberite,nichwall/cuberite,bendl/cuberite,birkett/MCServer,Fighter19/cuberite,Altenius/cuberite,jammet/MCServer,guijun/MCServer,Haxi52/cuberite,electromatter/cuberite,electromatter/cuberite,Howaner/MCServer,QUSpilPrgm/cuberite,Haxi52/cuberite,birkett/cuberite,HelenaKitty/EbooMC,Howaner/MCServer,bendl/cuberite,Frownigami1/cuberite,linnemannr/MCServer,mjssw/cuberite,Fighter19/cuberite,johnsoch/cuberite,kevinr/cuberite,QUSpilPrgm/cuberite,guijun/MCServer,nicodinh/cuberite,nicodinh/cuberite,birkett/MCServer,mc-server/MCServer,mc-server/MCServer,tonibm19/cuberite,Howaner/MCServer,tonibm19/cuberite,thetaeo/cuberite,Altenius/cuberite,johnsoch/cuberite,Howaner/MCServer,bendl/cuberite,thetaeo/cuberite,tonibm19/cuberite,nicodinh/cuberite,SamOatesPlugins/cuberite,birkett/cuberite,Tri125/MCServer,jammet/MCServer,Fighter19/cuberite,kevinr/cuberite,johnsoch/cuberite,mmdk95/cuberite,ionux/MCServer,linnemannr/MCServer,Fighter19/cuberite,ionux/MCServer,ionux/MCServer,Tri125/MCServer,linnemannr/MCServer,mc-server/MCServer,Tri125/MCServer,Haxi52/cuberite,MuhammadWang/MCServer,linnemannr/MCServer,Schwertspize/cuberite,Schwertspize/cuberite,Tri125/MCServer,nevercast/cuberite,Fighter19/cuberite,marvinkopf/cuberite,jammet/MCServer,nichwall/cuberite,Howaner/MCServer,mjssw/cuberite,Altenius/cuberite,marvinkopf/cuberite,marvinkopf/cuberite,nichwall/cuberite,Howaner/MCServer,birkett/cuberite,johnsoch/cuberite,SamOatesPlugins/cuberite,nicodinh/cuberite,birkett/MCServer,ionux/MCServer,kevinr/cuberite,mmdk95/cuberite,nounoursheureux/MCServer,zackp30/cuberite,Schwertspize/cuberite,nounoursheureux/MCServer,kevinr/cuberite,mc-server/MCServer,tonibm19/cuberite,mmdk95/cuberite,zackp30/cuberite,linnemannr/MCServer,MuhammadWang/MCServer,zackp30/cuberite,MuhammadWang/MCServer,MuhammadWang/MCServer,HelenaKitty/EbooMC,nevercast/cuberite,electromatter/cuberite,mc-server/MCServer,HelenaKitty/EbooMC,SamOatesPlugins/cuberite,nichwall/cuberite,HelenaKitty/EbooMC,nevercast/cuberite,mmdk95/cuberite,marvinkopf/cuberite,Frownigami1/cuberite,mjssw/cuberite,mmdk95/cuberite,Tri125/MCServer,birkett/cuberite,electromatter/cuberite,mc-server/MCServer,guijun/MCServer,nevercast/cuberite,linnemannr/MCServer,Schwertspize/cuberite,ionux/MCServer,birkett/MCServer,QUSpilPrgm/cuberite,marvinkopf/cuberite,tonibm19/cuberite,birkett/MCServer