added comments model and controller
added comment associations to project, comment and user models
comments/new page renders. comments don't save yet.
comment path works but not showing yet
added comment login verification
Added New Comment button to comment show page
resolving schema merge conflicts
still resolving conflicts with schema
Merge branch 'master' into comment

Conflicts:
	app/models/project.rb
	app/models/user.rb
	app/views/projects/show.html.erb