[Azoth Murm] Session entry longetivity for non-rosters for #1381.
[Azoth] No need in RemoveNonRosterItem() method for #1381.
[Azoth Murm] Support removing non-rosters via RemoveEntry for #1381.
[Azoth Murm] GetUserInfo() gets a list now.
[Azoth Murm] Proper typecast.
[Azoth Murm] NRI list getter/setter in connection for #1381.
[Azoth Murm] Store non-roster items in a variable.

Finally closes #1381.