Reintroduce skipping local development OAuth setup
Fixes again #1973 (closed)
Original MR: https://gitlab.com/gitlab-org/gitter/webapp/-/merge_requests/1795
We've tried to revert this change as a part of fixing the API memory issue: https://gitlab.com/gitlab-com/gl-infra/infrastructure/-/issues/9673#note_316163804
CHANGELOG: https://gitlab.com/gitlab-org/gitter/webapp/-/blob/develop/CHANGELOG.md#20191-2020-04-02
There are no new code changes, only putting the original code back to develop.
Edited by Tomas Vik