Android: Window.exitOnBack closes the current activity instead of the main

[Jei]

When Window.exitOnBack is set to true, the back button is supposed to close the main activity of the Titanium app. What we're doing instead is:

			$this.addEventListener('androidback', function() {
				$this.exitOnClose = true; // Set exitOnClose to true, since every window is an activity
				Ti.Android.currentActivity.finish();
			});

which means that the main activity of the app still exists even after pressing the back button.
One side effect is that the previous intent data is retained if we open the app again from the opened apps menu, which means that, if we start the app with a url schema, it will be read again.