UIBarButtonItem weren't created with a title/text so VoiceOver couldn't
know what to reads. This marks the element as an AccessibilityElement
and sets an accessibilityLabel.
Less than 30 erros left, let's hope it still works
Added lib.*.d.ts from typescript, removed lib and dom stuff, added by hand XHR, alert etc. .d.ts-es for polyfills
Roll back some changes involved in separating UIEvent for dom and ios
Test combined dts-es will now use lib, while internally we will not to avoid UIEvent conflict with dom stuff