Merge branch 'feature/reports' into 'develop'

config/config.exs

docs/config.md

lib/pleroma/activity.ex

lib/pleroma/emails/admin_email.ex

lib/pleroma/emails/mailer.ex

lib/pleroma/user.ex

lib/pleroma/web/activity_pub/activity_pub.ex

lib/pleroma/web/activity_pub/utils.ex

lib/pleroma/web/common_api/common_api.ex

lib/pleroma/web/common_api/utils.ex

lib/pleroma/web/mastodon_api/mastodon_api_controller.ex

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

lib/pleroma/web/router.ex

lib/pleroma/web/twitter_api/twitter_api.ex

...po/migrations/20190123092341_users_add_is_admin_index.exs

test/web/activity_pub/activity_pub_test.exs

test/web/common_api/common_api_test.exs

test/web/mastodon_api/mastodon_api_controller_test.exs