Fixed gettext references.

lms/djangoapps/student_account/views.py

lms/djangoapps/student_profile/views.py

...atic/js/student_account/views/account_settings_factory.js

...tatic/js/student_profile/views/learner_profile_factory.js

...static/js/student_profile/views/learner_profile_fields.js

lms/static/js/views/fields.js

lms/templates/fields/field_dropdown.underscore

lms/templates/fields/field_image.underscore

lms/templates/fields/field_link.underscore

lms/templates/fields/field_readonly.underscore

lms/templates/fields/field_text.underscore

lms/templates/fields/field_textarea.underscore

lms/templates/student_profile/learner_profile.underscore