can add errata both via products & to-level. Also added test-case for re-promotion
Merge branch 'master' into delete_changeset

Conflicts:
	src/katello/changesets.clj
added deletion-already-inprogress notification
added back dep-chains
Merge branch 'master' into delete_changeset

Conflicts:
	src/katello/changesets.clj
solved the results:skip issue
Merge pull request #219 from kbidarkar/delete_changeset

[DONE] can add errata both via products & top-level. Also added test-case for re-promotion