Setting up Avisheks changes
Fixed the devise gem

I was having a lot of devise gem issues. I fixed the token confirmation
and routed to the appropriate devise registration controller.
Working on session views
Working on Study session

Made the index and new views and create controller function
Merge branch 'master' into Mustapha's-Branch

Conflicts:
	Gemfile.lock
	app/controllers/courses_controller.rb
	app/models/course.rb
	app/views/layouts/application.html.erb
	config/routes.rb
	db/schema.rb
Solved conflicting changes
Merge branch 'Mustapha's-Branch'

Conflicts:
	Gemfile.lock
	db/schema.rb
making the all study session link work in application html