修改：      app/models/project.rb
	修改：      app/views/layouts/legacy/project_12.html.haml
	修改：      app/views/layouts/legacy/project_14.html.haml
	修改：      app/views/layouts/legacy/project_16.html.haml
	修改：      app/views/layouts/legacy/project_18.html.haml
	修改：      app/views/layouts/legacy/project_5.html.haml
	修改：      app/views/layouts/legacy/project_special_12.html.haml
	修改：      app/views/projects/_form_basic_info.html.haml
	修改：      app/views/projects/_form_project_info.html.haml
	修改：      app/views/projects/_form_question.html.haml
	修改：      app/views/projects/_new_tab.html.haml
	修改：      app/views/projects/_project.html.haml
	修改：      app/views/projects/_tab.html.haml
	修改：      app/views/questions/_question.html.haml
	新文件：    db/migrate/20140112041814_add_variables_to_projects.rb