Backend code for 2FA reset

In anticipation of adding a button to the admin UI to reset 2FA for any user, we should add an API endpoint for doing that. Perhaps also create a CLI command for it.

changed milestone to %2.10

added App::Dashboard Authentication labels

assigned to @arie

created branch 176-backend-code-for-2fa-reset to address this issue

mentioned in merge request !152 (merged)

added Doing label

mentioned in commit 2c737fec

closed with merge request !152 (merged)