Autocomplete: don't match non-subscribed group-names.
Autocomplete: don't match non-subscribed group-names.

There's no point, since we can't post/link to them anyway.

Piratas/tortuga,eXcomm/gnu-social,gnusocial/mainline,studio666/gnu-social,eXcomm/gnu-social,faulteh/gnu-social,charnimda/lgbtpzn-social,bankonme/gnu-social,bankonme/gnu-social,studio666/gnu-social,chimo/social,eXcomm/gnu-social,bankonme/gnu-social,gnusocial/mainline,gnusocial/mainline,charnimda/lgbtpzn-social,furtherfield/gnu-social,charlycoste/StatusNet,chimo/social,charlycoste/StatusNet,eXcomm/gnu-social,faulteh/gnu-social,furtherfield/gnu-social,faulteh/gnu-social,bankonme/gnu-social,charnimda/lgbtpzn-social,gnusocial/mainline,furtherfield/gnu-social,foocorp/gnu-social,charlycoste/StatusNet,studio666/gnu-social,foocorp/gnu-social,studio666/gnu-social,Piratas/tortuga,chimo/social,faulteh/gnu-social,Piratas/tortuga,furtherfield/gnu-social,Piratas/tortuga,foocorp/gnu-social