Added new api handlers to get plugin information

MediaBrowser.Api/HttpHandlers/PluginConfigurationHandler.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Linq;
+using MediaBrowser.Controller;
+
+namespace MediaBrowser.Api.HttpHandlers
+{
+    public class PluginConfigurationHandler : JsonHandler
+    {
+        protected override object ObjectToSerialize
+        {
+            get
+            {
+                string pluginName = QueryString["name"];
+
+                return Kernel.Instance.PluginController.Plugins.First(p => p.Name.Equals(pluginName, StringComparison.OrdinalIgnoreCase)).Configuration;
+            }
+        }
+    }
+}