fixes #1029: slight wording changes & bindings hookups for help menu
fixes #1029: slight wording changes & bindings hookups for help menu

tizzybec/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,Zhao-Qi/tilemill,florianf/tileoven,mbrukman/tilemill,MappingKat/tilemill,mbrukman/tilemill,paulovieira/tilemill-clima,tilemill-project/tilemill,fxtentacle/tilemill,tizzybec/tilemill,paulovieira/tilemill-clima,fxtentacle/tilemill,paulovieira/tilemill-clima,florianf/tileoven,nyimbi/tilemill,Zhao-Qi/tilemill,MappingKat/tilemill,nyimbi/tilemill,florianf/tileoven,fxtentacle/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,tizzybec/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,tizzybec/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,mbrukman/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,mbrukman/tilemill,Zhao-Qi/tilemill,mbrukman/tilemill,nyimbi/tilemill,tilemill-project/tilemill,MappingKat/tilemill,paulovieira/tilemill-clima,Zhao-Qi/tilemill,MappingKat/tilemill,nyimbi/tilemill,paulovieira/tilemill-clima,nyimbi/tilemill,tizzybec/tilemill,fxtentacle/tilemill,Zhao-Qi/tilemill,MappingKat/tilemill,tilemill-project/tilemill,fxtentacle/tilemill