修复上次Commit遗留的Bug
	修复 手机端网页显示问题
	modified:   app/assets/javascripts/mobile/questions.js.coffee
	modified:   app/controllers/application_controller.rb
	modified:   app/controllers/mobile/answers_controller.rb
	modified:   app/controllers/mobile/questions_controller.rb
	modified:   app/controllers/questions_controller.rb
	modified:   app/models/user.rb
	modified:   app/views/answers/correct.js.erb
	modified:   app/views/answers/fake.js.erb
	modified:   app/views/answers/wrong.js.erb
	modified:   app/views/layouts/mobile/mobile.html.haml
	modified:   app/views/layouts/mobile/questions/question.html.haml
	modified:   app/views/mobile/answers/_fake.html.haml
	modified:   app/views/mobile/answers/_solution.html.haml
	modified:   config/routes.rb