[#923] Merge remote-tracking branch 'remotes/upstream/develop' into twitter_oauth

config/config.exs

config/test.exs

docs/Custom-Emoji.md

docs/Message-Rewrite-Facility-configuration.md

docs/Pleroma-API.md

docs/config.md

lib/pleroma/html.ex

lib/pleroma/notification.ex

lib/pleroma/reverse_proxy.ex

lib/pleroma/user.ex

lib/pleroma/user/info.ex

lib/pleroma/web/activity_pub/activity_pub.ex

lib/pleroma/web/activity_pub/transmogrifier.ex

lib/pleroma/web/activity_pub/utils.ex

lib/pleroma/web/auth/ldap_authenticator.ex

lib/pleroma/web/auth/pleroma_authenticator.ex

lib/pleroma/web/common_api/common_api.ex

lib/pleroma/web/mastodon_api/mastodon_api_controller.ex

lib/pleroma/web/mastodon_api/views/account_view.ex

lib/pleroma/web/oauth/oauth_controller.ex