Replace sprockets/browserify with Webpack (#2617)

* Replace browserify with webpack

* Add react-intl-translations-manager

* Do not minify in development, add offline-plugin for ServiceWorker background cache updates

* Adjust tests and dependencies

* Fix production deployments

* Fix tests

* More optimizations

* Improve travis cache for npm stuff

* Re-run travis

* Add back support for custom.scss as before

* Remove offline-plugin and babili

* Fix issue with Immutable.List().unshift(...values) not working as expected

* Make travis load schema instead of running all migrations in sequence

* Fix missing React import in WarningContainer. Optimize rendering performance by using ImmutablePureComponent instead of
React.PureComponent. ImmutablePureComponent uses Immutable.is() to compare props. Replace dynamic callback bindings in
<UI />

* Add react definitions to places that use JSX

* Add Procfile.dev for running rails, webpack and streaming API at the same time

app/javascript/mastodon/features/favourited_statuses/index.js

@@ -0,0 +1,67 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import LoadingIndicator from '../../components/loading_indicator';
+import { fetchFavouritedStatuses, expandFavouritedStatuses } from '../../actions/favourites';
+import Column from '../ui/components/column';
+import StatusList from '../../components/status_list';
+import ColumnBackButtonSlim from '../../components/column_back_button_slim';
+import { defineMessages, injectIntl } from 'react-intl';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+
+const messages = defineMessages({
+  heading: { id: 'column.favourites', defaultMessage: 'Favourites' }
+});
+
+const mapStateToProps = state => ({
+  statusIds: state.getIn(['status_lists', 'favourites', 'items']),
+  loaded: state.getIn(['status_lists', 'favourites', 'loaded']),
+  me: state.getIn(['meta', 'me'])
+});
+
+class Favourites extends ImmutablePureComponent {
+
+  constructor (props, context) {
+    super(props, context);
+    this.handleScrollToBottom = this.handleScrollToBottom.bind(this);
+  }
+
+  componentWillMount () {
+    this.props.dispatch(fetchFavouritedStatuses());
+  }
+
+  handleScrollToBottom () {
+    this.props.dispatch(expandFavouritedStatuses());
+  }
+
+  render () {
+    const { statusIds, loaded, intl, me } = this.props;
+
+    if (!loaded) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    return (
+      <Column icon='star' heading={intl.formatMessage(messages.heading)}>
+        <ColumnBackButtonSlim />
+        <StatusList {...this.props} scrollKey='favourited_statuses' onScrollToBottom={this.handleScrollToBottom} />
+      </Column>
+    );
+  }
+
+}
+
+Favourites.propTypes = {
+  dispatch: PropTypes.func.isRequired,
+  statusIds: ImmutablePropTypes.list.isRequired,
+  loaded: PropTypes.bool,
+  intl: PropTypes.object.isRequired,
+  me: PropTypes.number.isRequired
+};
+
+export default connect(mapStateToProps)(injectIntl(Favourites));