Don't use a separate LinkService for DAGService.GetLinks()
Kevin Atkinson authored
Instead make LinkService a part of DAGService.  The LinkService is now
simply an interface that DAGService implements.  Also provide a
GetOfflineLinkService() method that the GC uses to get an offline
instance.

License: MIT
Signed-off-by: default avatarKevin Atkinson <k@kevina.org>
721df367