upgrade packages, and delete a few unneeded ones

fix search for client resulting in invalid GUID parse
simplify output from dvar not being found
make sure to prompt if not all servers could be reached

SharedLibraryCore/Interfaces/IManager.cs

@@ -24,7 +24,6 @@ namespace SharedLibraryCore.Interfaces
         ClientService GetClientService();
         AliasService GetAliasService();
         PenaltyService GetPenaltyService();
-        IDictionary<int, EFClient> PrivilegedClients { get; }
         /// <summary>
         /// Get the event handlers
         /// </summary>