Add a control that represents a tabbed UI

[marchermans]

Tabbed UI

Features

• Tabs need to be on the top.
• Groups of tabs on either side.
• Nothing on the bottom.
• If only one group is supplied no groups are rendered, and the only group is always the selected.
• Supports a single template for tabs and a single template for groups.
• If binding is used (and thus the templates), both templates need to be defined by the user, else the factory throws an exception.
• If binding is not used, no templates are allowed to be defined.