Spec passing: Only admin can create the topic
    should create new topic
TopicsController Only admin can delete topic Should delete
removed a bug
refactored topics controller
Nested form issue
change the model fields. add the validations for fields.
completd the creating level using nested_form.
add the transcript field in content model. add the show action for topic controller.
Have removed unwanted routes. Have added methods in topics controller. Have modified specs for topics controller
Merge branch 'master' of github.com:nitinzd/brails
Topic form alignment
Merge branch 'master' of github.com:nitinzd/brails

Conflicts:
	app/views/topics/_form.html.haml
Merge branch 'master' into design
Have added a method attempt_question in topic controller. Modified specs for topics controller
Modified method attempt_question
Merge branch 'master' of github.com:nitinzd/brails
implement the devise and devise_invitable gem. completed the user registration.
Have integrated CKEditor
Merge branch 'master' of github.com:nitinzd/brails
overwrite the authenticate_inviter! method to invite the users.