[TIMOB-5817] Android: keyboard type set as number pad permits input of non-numeric values

Problem

New minor version of Titanium SDK has a new look of numeric keyboard. The problem is that it allows input of non-numeric values.

Test case

How to reproduce the issue: run this example with 1.7.4 version of Titanium SDK, click on text field and type "*" or "#" symbol. You'll see that they are present in text field, while they shouldn't be present. Compile and run same example with 1.7.3 SDK version and try to do same thing. You'll see that you can't input "*" or "#" symbols (or any other that is not a number).

var win = Ti.UI.createWindow({
	modal: true,
	backgroundColor: '#000'
});

var textField = Ti.UI.createTextField({
	width: 200,
	keyboardType: Ti.UI.KEYBOARD_NUMBER_PAD
});

win.add(textField);

win.open();

Also, it would be nice if there was key in this new keyboard that would minimize keyboard (if that is possible).