develop
(Partially) Fix #2100: add cache slugs. (#2208)
Fix #8499: Serve Images in WebP (#9206)
Milestone 1.4 (Learner group MVP): Add facilitator dashboard and learner group creation journey (#15709)
M 2.2.1: Audit and Fix invalid profile picture inside UserSettingsModel (#16492)
M 2.2.3: Changes to push user profile picture to GCS. (#16521)
Fix images on splash (#15459)
