Added lists for authors and citations.  Added forms for nodes and non_itis nodes.  Changed non_itis model to non_iti.  Edited visualization graph to not have decimals in y Axis.
Merge pull request #33 from diceydawg/umass_branch

Some additions
added admin approval for user accounts, and also finished making changes to abilities
till solution for moderators is found
Merge branch 'umass_branch' of https://github.com/jjliang/databaseui into umass_branch

Conflicts:
	app/models/non_iti.rb
	log/development.log
fixed conflicts,
finished defining abilities. However, Rails_admin no longer lists all the models
created a seed file to default a foodwebbuilder@gmail.com user that is approved by default
'behind'