Update: Configuration Optimisation and Caching

Loads entire configuration at start-up (rather than scope-based
loading). Deserialization occurs once, with the resulting value cached
and replayed if the requested type matches.

Disco.Data/Configuration/Modules/DeviceProfilesConfiguration.cs

@@ -1,9 +1,5 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using Disco.Models.Repository;
-using Disco.Data.Repository;
+using Disco.Data.Repository;
+using System;
 
 namespace Disco.Data.Configuration.Modules
 {