Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
	app/controllers/api/v1/mutes_controller.rb
	config/locales/simple_form.pl.yml

app/javascript/mastodon/features/compose/components/upload_button.js

@@ -7,7 +7,7 @@ import ImmutablePureComponent from 'react-immutable-pure-component';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 
 const messages = defineMessages({
-  upload: { id: 'upload_button.label', defaultMessage: 'Add media (JPEG, PNG, GIF, WebM, MP4)' },
+  upload: { id: 'upload_button.label', defaultMessage: 'Add media (JPEG, PNG, GIF, WebM, MP4, MOV)' },
 });
 
 const makeMapStateToProps = () => {