OPEN - task 47: Make sure all strings are in the lang pack 
https://github.com/DigitalCampus/moodle-block_oppia_mobile_export/issues/issues/issue/47
OPEN - task 47: Make sure all strings are in the lang pack 
https://github.com/DigitalCampus/moodle-block_oppia_mobile_export/issues/issues/issue/47