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/hotkey/hotkey.page.js

@@ -54,7 +54,7 @@ function testElementHotkey(hotkey, $element, attr) {
 
 const hotkeyPage = new AutoloadPage('hotkeyPage', () => {
   $(document).on('keydown', (ev) => {
-    const hotkey = ['alt', 'ctrl', 'shift'].filter(modifyKey => ev[`${modifyKey}Key`]);
+    const hotkey = ['alt', 'ctrl', 'shift'].filter((modifyKey) => ev[`${modifyKey}Key`]);
     if (ev.metaKey && !ev.ctrlKey) {
       hotkey.push('ctrl');
     }