Tab panel Copy

Creates replicas of a panel created using GUIDE that works like a tab panel.

TABPANELCOPYFCN Helper function for tabpanelcopy
Creates replicas of a panel created using GUIDE that works like a tab
panel.
Handles of the reference controls in the handles struct are updated every
time you change the active tab, so you can access them in the normal way.

Steps:
1. Create a reference panel with controls with GUIDE.
2. Initialize tab panel passing the handle of the panel.
tabpanelcopyfcn ('initialize', panel);
3. Add a tab when you need it.
tabpanelcopyfcn ('add_tab', panel, 'title', handles);