Client fixes

Client is partially done.
227 warnings left out of 1500
I like Rider

Oqtane.Server/Controllers/PageController.cs

@@ -6,6 +6,7 @@ using Oqtane.Shared;
 using System.Linq;
 using Oqtane.Security;
 using System.Net;
+using Oqtane.Enums;
 using Oqtane.Infrastructure.Interfaces;
 using Oqtane.Repository;