Merge feature/add_skin into master: resolve all conflicts

- GameGlobal.js: keep upstream SERVER_URL with /ws suffix
- en.js/zh.js: merge both settings.nickname and settings.profile keys
- SettingsScene.js: keep both nickname row and profile button
- server/index.js: merge express app + content security proxy with
  noServer WebSocket mode and path validation
- Add .gitignore for node_modules and .codebuddy

js/base/GameGlobal.js

@@ -172,6 +172,8 @@ const SCENE = {
   TEAM_ROOM: 'team_room',
   TEAM_GAME: 'team_game',
   TEAM_RESULT: 'team_result',
+  PROFILE: 'profile',
+  CHAT_ROOM: 'chat_room',
 };
 
 // ============================================================