[Moment] Update Moment.js from 2.4.0 to 2.8.4
Update Core.js to new Moment version and add an additionnal check for a SharePoint global variable.
[NavigationService] Rename the occurrence link in the NavigationManagedProperties since in not generic enough. It's now a filter managed property you can filter on. Also, I added a better check for empty or null properties in the query building process.