add rsd to the list of login actions
add rsd to the list of login actions

Allows rsd.xml to be reached on private sites. Fixes http://status.net/trac/ticket/2309

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