Fix i18n for B/kB/MB and add translator documentation.
Fix i18n for B/kB/MB and add translator documentation.

csarven/statusnet,gnusocial/mainline,Piratas/tortuga,charnimda/lgbtpzn-social,minmb/statusnet,zcopley/StatusNet,csarven/statusnet,minmb/statusnet,sikevux/bsk-social,studio666/gnu-social,chimo/social,sikevux/bsk-social,gnusocial/mainline,eXcomm/gnu-social,UngPirat/freesocial,faulteh/gnu-social,shashi/StatusNet,sikevux/bsk-social,UngPirat/freesocial,minmb/statusnet,furtherfield/gnu-social,faulteh/gnu-social,charnimda/lgbtpzn-social,zcopley/zcopleys-statusnet-clone,furtherfield/gnu-social,znarf/statusnet-ladistribution,zh/statusnet,Piratas/tortuga,zh/statusnet,shashi/StatusNet,eXcomm/gnu-social,foocorp/gnu-social,xebia/statusnet-oauth2,d3vgru/StatusNet,d3vgru/StatusNet,studio666/gnu-social,eXcomm/gnu-social,eXcomm/gnu-social,xebia/statusnet-oauth2,xebia/statusnet-oauth2,zcopley/StatusNet,furtherfield/gnu-social,chimo/social,csarven/statusnet,foocorp/gnu-social,sikevux/bsk-social,charlycoste/StatusNet,zcopley/zcopleys-statusnet-clone,UngPirat/freesocial,faulteh/gnu-social,shashi/StatusNet,furtherfield/gnu-social,zcopley/StatusNet,bankonme/gnu-social,csarven/statusnet,zh/statusnet,bankonme/gnu-social,foocorp/gnu-social,faulteh/gnu-social,znarf/statusnet-ladistribution,Piratas/tortuga,Piratas/tortuga,charlycoste/StatusNet,chimo/social,zcopley/zcopleys-statusnet-clone,bankonme/gnu-social,studio666/gnu-social,charlycoste/StatusNet,gnusocial/mainline,d3vgru/StatusNet,gnusocial/mainline,bankonme/gnu-social,studio666/gnu-social,charnimda/lgbtpzn-social,znarf/statusnet-ladistribution