Add tests of access and password reset views

lms/static/js/spec/student_account/access_spec.js

lms/static/js/spec/student_account/password_reset_spec.js

lms/static/js/student_account/models/PasswordResetModel.js

lms/static/js/student_account/views/AccessView.js

lms/static/js/student_account/views/LoginView.js

lms/static/js/student_account/views/PasswordResetView.js

lms/static/js/student_account/views/RegisterView.js

lms/templates/student_account/access.underscore

lms/templates/student_account/password_reset.underscore