mod_admin_shell: Only check that local users exist locally

mod_disco: Optionally return info on admin accounts to non-contacts If you already know the account, from say the server contact info, then this confirms their admin status.

mod_disco: Advertise anonymous users Can these even be seen?

mod_disco: Advertise admin accounts as such via disco identity

mod_admin_shell: Support setting roles on hosts other than the users' Needed to e.g. grant admin rights on a component, or grant non-local users local privileges. Leave the same host syntax for convenience, since this might be the common case.

mod_admin_shell: Add command for updating roles user:roles(jid, roles) This would allow e.g. granting admin status without changing the config and without a restart.

mod_admin_shell: Allow setting roles when creating user

net.server_epoll: Ensure calls to :write() return something With opportunistic writes enabled, writes can return what :onwritable() returns, thus :onwritable() should return something sensible at each spot. Should prevent whatever caused > Error writing to connection: (nil) Tho this was probably harmless

MUC: Allow modules a chance to act prior to room destruction

mod_cron: Expose the One Timer via module environment This makes it easier to reschedule or otherwise manipulate the timer from e.g. the shell, which is handy for debugging.