Add datadog reporting to the feedback submission mechanism
Add more information to Zendesk tickets and make the information more readable
Add course id tagging to feedback submissions
Tag all Zendesk issues with "LMS" per request from Mary
Tweak text in help modal per request from Mary
Add feedback submission test case for invalid email address
Merge pull request #120 from edx/gprice/help-widget-tweaks

Reviewed by @brianhw https://rbcommons.com/s/edx/r/17/