Tint

Setting the tint only on UIWindow was not enough, setting it on UIView, UINavigationBar, and UIToolbar as well.

The tint still doesn't update as it should for the Apple supplied email dialog, unknown why. The toolbar's background updates as it should with barTint.

The test app got an update so the refresh test page now works, this so we can make sure that the button is tinted.

Testing the appearance protocol is very difficult as it's not fully known how it truly works, only chance of verifying was changing app.json and run the simulator to see what happens.