Merge branch 'hotfix/point_to_icommons_common_1.7.1'
improved error handling, streamlined exceptions and logging statements to deal with the error that are occurring in prod:
File "/apps/icommons_lti_tools/lecture_video/views.py", line 146, in main
   logger.exception('ObjectDoesNotExist, huid='+huid+', keyword='+keyword+', course_instance_id='+course_instance_id)

remove logger strings for hid, keyword and course_instance.
Merge pull request #137 from Harvard-University-iCommons/hotfix/lecture-video-logger-exceptions

Hotfix/lecture video logger exceptions