webdav portal fixes

WebsitePanel/Sources/WebsitePanel.WebDav.Core/Config/WebConfigSections/OpenerElementCollection.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Configuration;
+
+namespace WebsitePanel.WebDav.Core.Config.WebConfigSections
+{
+    [ConfigurationCollection(typeof(OpenerElement))]
+    public class OpenerElementCollection : ConfigurationElementCollection
+    {
+        protected override ConfigurationElement CreateNewElement()
+        {
+            return new OpenerElement();
+        }
+
+        protected override object GetElementKey(ConfigurationElement element)
+        {
+            return ((OpenerElement)element).Extension;
+        }
+    }
+}