Simplifies more of the interface config collection to reduce nesting.

src/Umbraco.Core/Configuration/OptionalInnerTextConfigurationElement.cs

@@ -0,0 +1,23 @@
+namespace Umbraco.Core.Configuration
+{
+    /// <summary>
+    /// This is used to supply optional/default values when using InnerTextConfigurationElement
+    /// </summary>
+    /// <typeparam name="T"></typeparam>
+    internal class OptionalInnerTextConfigurationElement<T> : InnerTextConfigurationElement<T>
+    {
+        private readonly InnerTextConfigurationElement<T> _wrapped;
+        private readonly T _defaultValue;
+
+        public OptionalInnerTextConfigurationElement(InnerTextConfigurationElement<T> wrapped, T defaultValue)
+        {
+            _wrapped = wrapped;
+            _defaultValue = defaultValue;
+        }
+
+        public override T Value
+        {
+            get { return string.IsNullOrEmpty(_wrapped.RawValue) ? _defaultValue : _wrapped.Value; }
+        }
+    }
+}