Marked all service implementations as internal

Core - Enabled XML docs
Modules - Added DI to module VMs

src/Artemis.Core/Services/RenderElementService.cs

@@ -15,7 +15,7 @@ using Serilog;
 
 namespace Artemis.Core.Services
 {
-    public class RenderElementService : IRenderElementService
+    internal class RenderElementService : IRenderElementService
     {
         private readonly IKernel _kernel;
         private readonly ILogger _logger;