change user attribute from private to protected so subclasses can use it
change user attribute from private to protected so subclasses can use it

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