Fix to group join event position.
Fix to group join event position.

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