Add list of muted user to UI and Getting Started (#1799)

Add the same UI that already exists for blocked users for muted
ones and add it to the "Getting Started" menu.

app/assets/javascripts/components/features/mutes/index.jsx

@@ -0,0 +1,68 @@
+import { connect } from 'react-redux';
+import PureRenderMixin from 'react-addons-pure-render-mixin';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import LoadingIndicator from '../../components/loading_indicator';
+import { ScrollContainer } from 'react-router-scroll';
+import Column from '../ui/components/column';
+import ColumnBackButtonSlim from '../../components/column_back_button_slim';
+import AccountContainer from '../../containers/account_container';
+import { fetchMutes, expandMutes } from '../../actions/mutes';
+import { defineMessages, injectIntl } from 'react-intl';
+
+const messages = defineMessages({
+  heading: { id: 'column.mutes', defaultMessage: 'Muted users' }
+});
+
+const mapStateToProps = state => ({
+  accountIds: state.getIn(['user_lists', 'mutes', 'items'])
+});
+
+const Mutes = React.createClass({
+  propTypes: {
+    params: React.PropTypes.object.isRequired,
+    dispatch: React.PropTypes.func.isRequired,
+    accountIds: ImmutablePropTypes.list,
+    intl: React.PropTypes.object.isRequired
+  },
+
+  mixins: [PureRenderMixin],
+
+  componentWillMount () {
+    this.props.dispatch(fetchMutes());
+  },
+
+  handleScroll (e) {
+    const { scrollTop, scrollHeight, clientHeight } = e.target;
+
+    if (scrollTop === scrollHeight - clientHeight) {
+      this.props.dispatch(expandMutes());
+    }
+  },
+
+  render () {
+    const { intl, accountIds } = this.props;
+
+    if (!accountIds) {
+      return (
+        <Column>
+          <LoadingIndicator />
+        </Column>
+      );
+    }
+
+    return (
+      <Column icon='users' heading={intl.formatMessage(messages.heading)}>
+        <ColumnBackButtonSlim />
+        <ScrollContainer scrollKey='mutes'>
+          <div className='scrollable' onScroll={this.handleScroll}>
+            {accountIds.map(id =>
+              <AccountContainer key={id} id={id} />
+            )}
+          </div>
+        </ScrollContainer>
+      </Column>
+    );
+  }
+});
+
+export default connect(mapStateToProps)(injectIntl(Mutes));