Administrator requested to merge CLOUD-226 into main Feb 04, 2022

Created by: kopancek

Description

Changes in this PR were done to support accepting organization invitation by email.

Related issue

https://sourcegraph.atlassian.net/browse/CLOUD-187 https://sourcegraph.atlassian.net/browse/CLOUD-226

Feature flagging

Changes done in this PR are behind a feature flag org-email-invites.

Screenshots/Video

TBD...

Testing

tested manually
unit tests TBD