#81: Split BiblioContributorUtility out from BiblioStyleBase.
#123: Add Export UI into view header.
Improve README comment's style.
Prevent notice on migrate if nothing needs to be upgraded from Biblio 1.x
Move addContributors to Bilbio instead of style class.
Merge pull request #138 from amitaibu/add-contributor

Move addContributors to Biblio class instead of style class
Remove empty line from README.
Merge branch '7.x-3.x' of github.com:amitaibu/biblio into 7.x-3.x
Map 1.x fields to 3.x field configuration.
Merge 3.x