Created new controller and route for the edit contributor page. 

Currently the controller only creates a new contributor. Code to edit and existing contributor and code to save the contributor have yet to be added. Also missing is calling the affiliation service to fill in that select button.

Moved lookups to a new services directory under mypubs. Lookups will be used on the this page and perhaps others and therefore are not specific to publications.
Properly handle a 401 response and indicate the provided credentials are
unauthorized.
Merge pull request #42 from thongsav-usgs/PUBSTWO-889

Properly handle a 401 response and indicate the provided credentials are
Merge pull request #41 from mbucknell/PUBSTWO-996

Created new controller and route for the edit contributor page.
Merge pull request #44 from cschroed-usgs/PUBSTWO-995

Pubstwo 995