Retrieving the seriesTitle only when a user enters text in the select2 field to narrow the search. Also filtering to show only the first 30 active and first 30 not active titles.

Fixed a bug where clearing the publication type or publication subtype was causing an error in the watcher's for the publication subtype and seriesTitle.
Fixed issues with losing contributor information when switching tabs. The text field was getting lost. It's appearing with the id in the $scope but then we need to put it in it's own field when creating pubData. 

The contributor.js needs some serious refactoring.
Merge pull request #84 from mbucknell/PUBSTWO-1080

Pubstwo 1080