Replaced X.size() with X.empty(), where applicable.
Replaced X.size() with X.empty(), where applicable.

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