upgrade dep:

css-loader 0.28->3.5
del 4.1->5.1
eslint 5.18->6.8
eslint-config-airbnb 17.1->18.1
eslint-loader 2.1->4.0
file-loader 2.0->6.0
fs.extra 8.0->9.0
gulp 2.0->3.0
gulp-nunjucks 4.0->5.0
json-loader 0.5->Removed
style-loader 0.23->1.1
uglifyjs-webpack-plugin 1.3->2.2
yargs 13.2->15.3
katex 0.10->0.11
react-monaco-editor 0.35->0.36
timeage-react 1.2->3.0
timeago.js 3.0->4.0
uuid 3.3->7.0

ui/components/messagepad/MessagePadDialogueListContainer.js

@@ -5,12 +5,12 @@ import 'jquery-scroll-lock';
 
 import ListItem from './DialogueListItemComponent';
 
-const mapStateToProps = state => ({
+const mapStateToProps = (state) => ({
   activeId: state.activeId,
   dialogues: state.dialogues,
 });
 
-const mapDispatchToProps = dispatch => ({
+const mapDispatchToProps = (dispatch) => ({
   handleClick(id) {
     dispatch({
       type: 'DIALOGUES_SWITCH_TO',
@@ -28,14 +28,14 @@ export default class MessagePadDialogueListContainer extends React.PureComponent
   render() {
     const orderedDialogues = _.orderBy(
       _.values(this.props.dialogues),
-      dialogue => (dialogue.isPlaceholder
+      (dialogue) => (dialogue.isPlaceholder
         ? Number.POSITIVE_INFINITY
         : _.maxBy(dialogue.reply, 'at').at),
       'desc',
     );
     return (
       <ol className="messagepad__list" ref="list">
-        {_.map(orderedDialogues, dialogue => (
+        {_.map(orderedDialogues, (dialogue) => (
           <ListItem
             key={dialogue._id}
             userName={