Create Viewrepr which handle the representation of the View. - Put in all the function about Hidden Nodes - In scene, initializes this.view with the first view of the project (later it will be handled by a view manager)

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{

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  "sessionModerator"   : "org.iri_research.renkan.coweb.RenkanSessionModerator",

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  "moderatorIsUpdater" : true,

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  "operationEngine"    : true,

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  "bots": [] 

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}