The acces to the site illustration has not been migrated because the illustration is not part of the model.

The use of the new API in SiteConfigurationExtensionPoint is to review:

• SiteParameter does not extend CategorizedElementDefinition
• Use the CategorizedElementDefinitionHelper instead of re-implement the 'categorize' and co methods
• Use a view to call the toJSON method on it
• Remove the illustration from the view (except if the binary.fromJSON is well implemented)
• Insert the language parameter after the skin one (or put it in the model?) Insert it via a ModelItem (take care of validators and enumerators..)
• Be careful to not break the sort of the parameters (there is a comparator in SiteConfigurationExtensionPoint but I don't know what it was used for)