setting added to User Settings -> Preferences -> Timeline as an opt out for users with german translation

src/settings/Settings.ts

@@ -586,4 +586,9 @@ export const SETTINGS: {[setting: string]: ISetting} = {
         displayName: _td("Enable experimental, compact IRC style layout"),
         default: false,
     },
+    "dontShowChatEffects": {
+        supportedLevels: LEVELS_ACCOUNT_SETTINGS,
+        displayName: _td("Don't show chat effects"),
+        default: false,
+    },
 };