added testing code for User model
adding debug info in development env
added user sign up page testing
added authentication page testing cases
added redirect to sign up  when not signed in
change from feasible to general in welcome page
Merge branch 'development' of github.com:Coursemology/coursemology.org into dev/add_path

Conflicts:
	app/assets/stylesheets/custom.css.scss
	app/helpers/application_helper.rb
fixed conflict