Deployment Bugfix

Fix logging issues on production.

add service variant name

1.2.0 Release Debug

improve url construction

[File Discovery]  Course can be fetched/created without a course_hex

This rewrites File Discovery phase related to studio, add its tests along with the additional feature:
Course retrieval/creation can be done via course_id alone, and course_hex/token is not a requirement anymore.

Modify 3PlayMedia turnaround levels

 EDUCATOR-1809

fix destination.json

Refine HEAL process, make logging louder

separate static configuration

Clean Course Model

Revert "Revert "Eliminate XuetangX, Add Migrations""

Revert "Eliminate XuetangX, Add Migrations"

 - remove xue, mobile_override, project_ID, s3_dir
 - update course_name, course_hold, institute, class_id fields.
 - add deprecated todo to smesterid

Eliminate XuetangX, Add Migrations

Re-encrypt transcript credentials

heartbeat endpoint

EDUCATOR-1632

Introduce error types in credentials api

Encrypt credentials

update settings override