Merged the panel features from the preview version to this one.

[ArneMaes0]

Breaking Changes

All the other publicly exposed properties, method and arguments are left the same, except for the InteractiveController:

• CurrentDialog property went from Dialog -> IDialog
• ShowDialog method went from Dialog -> IDialog

But all the existigs Dialogs in existing script will implement this IDialog interface by default, because the Dialog class implement it. For example in the YLE solution using this version would result in changing 2 lines of code from Dialog to IDialog.

New Features

What this version brings to the table in form of new features is the following:

• A dialog is now based on a panel, there's 3 different build in ones
  • GridPanel, is the equivalent of the normal Dialog
  • StackPanel, Shows widget one after another
  • FormPanel, Show widgets one after another with a label in front
• You can imbed panels in panels without you needing to calculate where it should fit in the global picture
• Fixes something starters found weird where if you add a section and then clear it that it doesn't show up in the view, with the panels that works because the panels keep references to the imbedded ones.
• You can easily create custom reusable panels specific for you use case, based on the 3 build in ones.