Merge pull request #1980 from edx/backbone-1.0.0

cms/static/js/base.js

cms/static/js/hesitate.js

cms/static/js/main.js

cms/static/js/models/course_info.js

cms/static/js/models/course_relative.js

cms/static/js/models/module_info.js

cms/static/js/models/settings/advanced.js

cms/static/js/models/settings/course_details.js

cms/static/js/models/settings/course_grading_policy.js

cms/static/js/views/checklists_view.js

cms/static/js/views/course_info_edit.js

cms/static/js/views/grader-select-view.js

cms/static/js/views/overview.js

cms/static/js/views/server_error.js

cms/static/js/views/validating_view.js

common/static/js/vendor/backbone-min.js

common/static/js/vendor/underscore-min.js