This introduces the `ENFORCE_MASQUERADE_START_DATES` flag. When the flag is disabled (default), masquerading users bypass start dates. When the flag is enabled, masquerading users see the same start date restrictions as regular students.
Open EdX Features ----------------- This is the root package for Open edX features that extend the edX platform. The intention is that these features would ideally live in an external repository, but for now they live in edx-platform but are cleanly modularized.