[Edit Linked Library] Fix to re-enable support for non-dupligroup linked assets

There's still an issue with using nested links if you're not launching a new
Blender instance. Currently, there's not a good way to warn the user about
that.



git-svn-id: https://svn.blender.org/svnroot/bf-extensions/contrib@4592 96b784f8-4ae3-dd11-aff7-0030488c597c
[TextureAtlas] Some fixes according to IdeasMan42's suggestions...

git-svn-id: https://svn.blender.org/svnroot/bf-extensions/contrib@4593 96b784f8-4ae3-dd11-aff7-0030488c597c
[Edit Linked Library] Fixes based on code review from Campbell

Code review URL: https://codereview.appspot.com/6815051

There is still a minor outstanding issue in that the add-on assumes the linked
object/group is in the active scene within the source library. Added a comment
to note this, but I don't consider this a showstopper.



git-svn-id: https://svn.blender.org/svnroot/bf-extensions/contrib@4594 96b784f8-4ae3-dd11-aff7-0030488c597c
[Edit Linked Library] Removed no-longer-relevant comment

git-svn-id: https://svn.blender.org/svnroot/bf-extensions/contrib@4595 96b784f8-4ae3-dd11-aff7-0030488c597c