Merge develop

.gitignore

.gitlab-ci.yml

CHANGELOG.md

config/config.exs

docs/api/differences_in_mastoapi_responses.md

docs/config.md

installation/download-mastofe-build.sh

lib/mix/tasks/benchmark.ex

lib/mix/tasks/pleroma/user.ex

lib/pleroma/activity.ex

lib/pleroma/bbs/authenticator.ex

lib/pleroma/bbs/handler.ex

lib/pleroma/conversation.ex

lib/pleroma/conversation/participation.ex

lib/pleroma/formatter.ex

lib/pleroma/html.ex

lib/pleroma/object/containment.ex

lib/pleroma/plugs/http_security_plug.ex

lib/pleroma/plugs/oauth_plug.ex

lib/pleroma/repo.ex