Merge branch 'instance-deletion' into 'develop'

AdminAPI: endpoint to delete all content from a remote instance

See merge request pleroma/pleroma!3483

diff --cc CHANGELOG.md
index bab6c2580e8ce567ebd720b25ec4a6c10cff486d,d4c17c694fd9b5dd80582c663c8602fd2a881625..f1711ae1f056ac50ff5e1f99ed693b7dbaa23fcd
--- 1/CHANGELOG.md
--- 2/CHANGELOG.md
+++ b/CHANGELOG.md
@@@ -59,9 -22,9 +59,10 @@@ The format is based on [Keep a Changelo
  - MRF (`FollowBotPolicy`): New MRF Policy which makes a designated local Bot account attempt to follow all users in public Notes received by your instance. Users who require approving follower requests or have #nobot in their profile are excluded.
  - Return OAuth token `id` (primary key) in POST `/oauth/token`.
  - AdminAPI: return `created_at` date with users.
+ - AdminAPI: add DELETE `/api/v1/pleroma/admin/instances/:instance` to delete all content from a remote instance.
  - `AnalyzeMetadata` upload filter for extracting image/video attachment dimensions and generating blurhashes for images. Blurhashes for videos are not generated at this time.
  - Attachment dimensions and blurhashes are federated when available.
 +- Mastodon API: support `poll` notification.
  - Pinned posts federation
  
  ### Fixed

diff --cc lib/pleroma/web/router.ex
Simple merge

diff --cc test/pleroma/web/admin_api/controllers/admin_api_controller_test.exs
Simple merge