Cookie list

• DAVINCI.USER - the username. set by the server for the convenience on the client
• maqExplorer - for serialization of the dijit.Tree state in the Explorer (open/closed folders)
• preview - ? set by preview part of servlet
• undefined - need to track this down. sets undefined=myapp

4 cookies defined in pagedesigner.html by the review merge. Should be cleaned up, minimally to use a path and a naming pattern like 'maq'. Do we really need all of these and should they never expire?

                                    dojo.cookie("davinci_designer", null, {expires: -1});
				dojo.cookie("davinci_designer_email", null, {expires: -1});
				dojo.cookie("review_version",null, {expires: -1, path:"/"});
				dojo.cookie("davinci_commentId",null, {expires: -1});