Add created and changed values for contributor.
Merge pull request #101 from amitaibu/84

Add created and changed values for contributor.
Fix Biblio-Issues View.
Merge pull request #105 from amitaibu/biblio_year

Fix Biblio-Issues View.

Set the year to 0, to non-published publications, so it's easier to group them by year.
Merge branch '7.x-3.x' into 99