[AC-2884] Button in bar should be able to display both image and title

This happens for all buttons in both toolbar, tabbedbar, buttonbar, etc. Documentation says the following: https://developer.appcelerator.com/apidoc/mobile/latest/Titanium.UI.TabbedBar-object "labels array the array of labels for the button bar. each object should have the properties title, image, width and enabled." In practice, if an image is specified, no title is displayed. There's nothing limiting the button from displaying both the button and the title, many apps do that. Try this var tabbedbar = Titanium.UI.createTabbedBar({ labels:[ {title: 'Item 1', width: 100, image: 'images/image1.png'}, {title: 'Item 2', width: 100, image: 'images/image2.png'}, {title: 'Item 3', width: 100, image: 'images/image3.png'}, ], style:Titanium.UI.iPhone.SystemButtonStyle.BAR, });