contains response_controller and capybara tests added

Expertiza Project E807. Refactoring and tetsing of reponse_controller.rb
Update response_controller.rb
Update response_controller.rb
Just the response controller commit
Merge branch 'master' of https://github.com/nixtish/expertiza
Revert "contains response_controller and capybara tests added"

This reverts commit f78ced625a29de0c88d0cc2dbe7f70aeece54fe0.
Merge branch 'master' of https://github.com/nixtish/expertiza into e807
closes #356

Conflicts:
	app/controllers/response_controller.rb