Add AdditionalData field to Page model and save endpoint

app/controllers/api/v1/Page.controller.js

@@ -122,6 +122,10 @@ class Page extends Controller {
             page.IsVisibleInMenu = !!req.body.IsVisibleInMenu
         }
 
+        if ( 'AdditionalData' in req.body ) {
+            page.AdditionalData = req.body.AdditionalData;
+        }
+
         /*let parent;
         if ( !req.body.ParentId ) return res.status(400).message('Missing required: ParentId').api({})
         else {

app/models/api/Page.model.js

@@ -33,6 +33,7 @@ class Page extends VersionedModel {
 			UpdateUserId: {type: String},
 			ChildPageIds: [String],
 			PageType: {type: String, default: PageType.Note}, // PageType
+			AdditionalData: Object,
 
 			// Menu flags
 			noDelete: { type: Boolean, default: false },