Merge branch 'develop' into '1865-media-only'

.gitlab-ci.yml

CHANGELOG.md

README.md

config/config.exs

config/description.exs

docs/API/admin_api.md

docs/configuration/cheatsheet.md

elixir_buildpack.config

installation/nginx-cache-purge.sh.example

lib/mix/tasks/pleroma/config.ex

lib/pleroma/application.ex

lib/pleroma/config/config_db.ex

lib/pleroma/config/transfer_task.ex

lib/pleroma/conversation/participation.ex

...oma/ecto_type/activity_pub/object_validators/date_time.ex

...oma/ecto_type/activity_pub/object_validators/object_id.ex

...ma/ecto_type/activity_pub/object_validators/recipients.ex

...oma/ecto_type/activity_pub/object_validators/safe_text.ex

lib/pleroma/ecto_type/activity_pub/object_validators/uri.ex

lib/pleroma/ecto_type/config/atom.ex