Remove whitespaces from system config lines
Remove whitespaces from system config lines

to fix errors with files that have different line endings than the
system. Output a line number when something is wrong. This should be
done wherever reading from text files probably.

igungor/recalbox-emulationstation,igungor/recalbox-emulationstation,cuhsat/EmulationStation,hevey/EmulationStation,pimcgcd/esmod,hdo/EmulationStation,pmoran13800/recalbox-emulationstation,emerrepengo/recalbox-emulationstation,hdo/EmulationStation,gr33k/EmulationStation,mgoulartBR/retrobox-emulationstation,cavedude00/EmulationStation,asmorgan24/EmulationStation-Marketplace,tbhova/EmulationStation,rockaddicted/recalbox-emulationstation,rjklawiter/ESpro,Black3v3r/EmulationStation,Spicykiwi/EmulationStation,larrykoubiak/EmulationStation,zigurana/EmulationStation,cavedude00/EmulationStation,dimistor/EmulationStation,asmorgan24/EmulationStation-Marketplace,joolswills/EmulationStation,rjklawiter/ESpro,MisterTea/EmulationStation,jrassa/EmulationStation,jrassa/EmulationStation,mgoulartBR/retrobox-emulationstation,zigurana/EmulationStation,larrykoubiak/EmulationStation,Krejza9/EmulationStation-sdlmixer,cavedude00/EmulationStation,hdo/EmulationStation,joolswills/EmulationStation,digitalLumberjack/recalbox-emulationstation,zigurana/EmulationStation,larrykoubiak/EmulationStation,jgeumlek/EmulationStation-tweaked,sdt/EmulationStation,pimcgcd/esmod,gr33k/EmulationStation,pmoran13800/recalbox-emulationstation,recalbox/recalbox-emulationstation,cuhsat/EmulationStation,igungor/recalbox-emulationstation,MisterTea/EmulationStation,joolswills/EmulationStation,digitalLumberjack/recalbox-emulationstation,Spicykiwi/EmulationStation,jrassa/EmulationStation,recalbox/recalbox-emulationstation,tschires/emu,hdo/jukeboxV3FrontEnd,RobLoach/EmulationStation,tbhova/EmulationStation,hevey/EmulationStation,Black3v3r/EmulationStation,MisterTea/EmulationStation,tbhova/EmulationStation,mgoulartBR/retrobox-emulationstation,emerrepengo/recalbox-emulationstation,recalbox/recalbox-emulationstation,Herdinger/EmulationStation,digitalLumberjack/recalbox-emulationstation,hdo/jukeboxV3FrontEnd,joolswills/EmulationStation,rjklawiter/ESpro,sdt/EmulationStation,RobLoach/EmulationStation,Black3v3r/EmulationStation,Herdinger/EmulationStation,tschires/emu,Krejza9/EmulationStation-sdlmixer,Herdinger/EmulationStation,pmoran13800/recalbox-emulationstation,cuhsat/EmulationStation,emerrepengo/recalbox-emulationstation,jgeumlek/EmulationStation-tweaked,pimcgcd/esmod,Spicykiwi/EmulationStation,rockaddicted/recalbox-emulationstation,Krejza9/EmulationStation-sdlmixer,sdt/EmulationStation,dimistor/EmulationStation,asmorgan24/EmulationStation-Marketplace,jgeumlek/EmulationStation-tweaked,tschires/emu,hdo/jukeboxV3FrontEnd,rockaddicted/recalbox-emulationstation,RobLoach/EmulationStation,hevey/EmulationStation,dimistor/EmulationStation,jrassa/EmulationStation,asmorgan24/EmulationStation-Marketplace,gr33k/EmulationStation