#112 Designer mode: a sort of web ide?

[Luca Garulli]

We need e designer mode much more powerful than the current.
- It must be integrated in each page of the view if designerMode="true" in AppConfiguration bean
- We can reuse current work in designer keeping updated to the new features
- It will be displayed as a non-modal popup with the features you can change
- In the future we can try the drag&drop but after we created a generic way to express it
- All changes must be saved in XML file (but also in Java sources)
- A simple Code editor can be included