Adding a number of logging messages for verification process.
Track upsell copy interaction, upgrade button and verify now button clicks on the dashboard
Update virtual pageview event categories, general polish
ECOM-759  if course is none return 404 error code.
Merge pull request #6326 from edx/renzo/split-verification-dashboard-analytics

Split verification dashboard analytics
Merge pull request #6323 from edx/awais786/ECOM-759

ECOM-759  if course is none return 404 error code.
Merge pull request #6327 from edx/sanchez/logging-verified-split

Adding a number of logging messages for verification process.
Render enrollment emails in the student's language

Enrollment, unenrollment and beta role emails should be rendered in the
student's language, and not the instructor's language.
Add Régis Behmo to AUTHORS