Fix missing import, fixing broken onboarding popup

services/web/public/stylesheets/app/editor.less

@@ -12,6 +12,7 @@
 @import "./editor/online-users.less";
 @import "./editor/hotkeys.less";
 @import "./editor/review-panel.less";
+@import "./editor/feature-onboarding.less";
 
 @keyframes blink {
 	0% {