Merge branch '1702-chat-doesn-t-work-on-ios' into 'master'

Remove vibrate in chat as it breaks the code on iOS

Closes #1702

See merge request Isleward/isleward!522

src/client/js/misc/helpers.js

@@ -133,5 +133,8 @@ define([], function () {
 	window.scale = isMobile ? 32 : 40;
 	window.scaleMult = isMobile ? 4 : 5;
 
+	if (!window.navigator.vibrate)
+		window.navigator.vibrate = () => {};
+
 	return window._;
 });