Prototype of nifty-editor integration .
Update repo
Create README.md
Update README.md
UndoSupport, now the editor will reload the gui only if file is changed and some property editors. Also xml auto completition and XmlNavigator
Bug fixing
Add the possibility to save on the Visual component
Code cleaning

I cleaned a bit the code creating some other packages and deleting old
unused classes
Gui pack
Added icon attribution
Manage style and control

Added a import action fro style and controls , also nifty-editor library
is updated with the last style&control handling feuture
Merge commit '3cbb158b81a53190ba4074bc3ae0b6b5a0f515d1'

Nifty-Editor prototype
Merge branch 'experimental'
With new nifty-editor. Added templates for styles and control .
Merge pull request #171 from relu91/master

Nifty Editor integration