Refactor stuff, clean up managers

Torch.API/Managers/IPluginManager.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using Torch.API.Plugins;
+using VRage.Collections;
+using VRage.Plugins;
+
+namespace Torch.API.Managers
+{
+    public interface IPluginManager : IManager, IEnumerable<ITorchPlugin>
+    {
+        event Action<List<ITorchPlugin>> PluginsLoaded;
+        List<ITorchPlugin> Plugins { get; }
+        void UpdatePlugins();
+        void DisposePlugins();
+    }
+}