Escape html/js with other bug fixes .

common/test/acceptance/tests/lms/test_lms_edxnotes.py

lms/djangoapps/edxnotes/helpers.py

lms/djangoapps/edxnotes/tests.py

lms/djangoapps/edxnotes/views.py

lms/static/js/dashboard/track_events.js

lms/static/js/edxnotes/models/note.js

lms/static/js/edxnotes/views/note_item.js

lms/static/js/spec/edxnotes/models/note_spec.js

lms/static/sass/course/_student-notes.scss

lms/templates/edxnotes/edxnotes.html