Merge branch 'twitter_oauth' into 'develop'

config/config.exs

config/dev.exs

docs/config.md

lib/pleroma/config.ex

lib/pleroma/registration.ex

lib/pleroma/user.ex

lib/pleroma/web/auth/authenticator.ex

lib/pleroma/web/auth/ldap_authenticator.ex

lib/pleroma/web/auth/pleroma_authenticator.ex

lib/pleroma/web/endpoint.ex

lib/pleroma/web/oauth/fallback_controller.ex

lib/pleroma/web/oauth/oauth_controller.ex

lib/pleroma/web/router.ex

lib/pleroma/web/templates/o_auth/o_auth/_scopes.html.eex

lib/pleroma/web/templates/o_auth/o_auth/consumer.html.eex

lib/pleroma/web/templates/o_auth/o_auth/register.html.eex

lib/pleroma/web/templates/o_auth/o_auth/show.html.eex

mix.exs

mix.lock

priv/repo/migrations/20190315101315_create_registrations.exs