Tweak focus/blur functions for JQuery upgrade.

cms/static/js/views/course_info_update.js

cms/static/js/views/experiment_group_edit.js

lms/static/coffee/spec/feedback_form_spec.coffee

lms/static/js/edxnotes/views/shim.js

lms/static/js/spec/student_account/login_spec.js