Add support for '@online@' Shared Roster Group (thanks to Martin Langhoff)(EJAB-1391)
New version of the @online@ patch originally by Collabora.
Notes:
- the presence push is mediated via the group rather than
per user - this may reduce memory footprint... _if_ ejabberd
has some smart optimisation in that codepath
- it assumes that any group with membership @online@ _displays_
online as well -- this is a simplification and breaks the
decoupling that ejabberd has in this regard.
projects / ejabberd / commit