Project administrator privelege added. Needed for access to sharing page. Applied to creator, can be administered on sharing page.

Error from devise_invitable required updating that gem to 1.2.1 and
rolling back to devise 3.0.0. Delete lock file, bundle install.
Merge branch 'master' of https://github.com/DigitalCurationCentre/DMPonline_v4

Conflicts:
	app/views/projects/share.html.erb