# What this PR does
Sometimes `CustomButtonView` returns HTTP 500 with the following error:
```
apps.alerts.models.custom_button.CustomButton.MultipleObjectsReturned: get() returned more than one CustomButton -- it returned 3!
```
This PR fixes it by adding `.distinct()` to the `CustomButton` queryset
when retrieving an instance + does the same for `WebhooksView`.
## Which issue(s) this PR fixes
Related to https://github.com/grafana/oncall-private/issues/1828
## Checklist
- [x] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required)
# What this PR does
* api returns all the resources available to the user by default
* substitutes `team switcher` with `multi-select team filter`
* allow referencing between integrations - escalations chains -
[schedules, outgoing webhooks] across teams
https://user-images.githubusercontent.com/2262529/225634581-2d2e8af2-15ce-4c01-a90e-8267d98f5a23.mov
## Which issue(s) this PR fixes
## Checklist
- [ ] Tests updated
- [ ] Documentation added
- [ ] `CHANGELOG.md` updated
---------
Co-authored-by: Maxim <maxim.mordasov@grafana.com>
Co-authored-by: Joey Orlando <joey.orlando@grafana.com>
Track all webhook responses data, and allow using this between
alertgroup-related webhooks (e.g. use firing webhook response data when
templating the acknowledge webhook request data).
NOTE: dropping the table is not backwards compatible but the feature is
not enabled (and in any case it would drop log entries only used for
status display)
