TabManager - Create Tab Panels (uitabgroup) from a GUIDE GUI

Convention based method which allows a tabbed GUI to be designed using GUIDE

This class allows users to create a GUI using GUIDE that supports a tabbed UI.
Since GUIDE doesn't directly support the uitabgroup control, this class allows tabs to be created as standard panels that are at run time converted to uitab controls.
Usage:
1. Create a pane with tag set to Tab? where ? is any letter or number (e.g. TabA). This main pane should be left empty and determines the size and location of the tab group (uitabgroup)
2. Create additional panes with a tag name that starts with the name of the main pane. All other controls should be added to these panes.
3. In the Guide generated function xxx_OpeningFcn add the following:
handles.tabManager = TabManager( hObject );