Updated all lookups to use new logging system. Updated lookups resolvers to use ManyObjectResolverBase

and are just adding the known resolvers on app startup and commented out the other resolver stuff for now.
Fixed up xpath statement for resolving the first document, site now renders :)

src/Umbraco.Core/Resolving/SingleObjectResolverBase.cs

@@ -0,0 +1,62 @@
+using System;
+
+namespace Umbraco.Core.Resolving
+{
+	/// <summary>
+	/// A Resolver to return and set a Single registered object.
+	/// </summary>
+	/// <typeparam name="TResolver"></typeparam>
+	/// <typeparam name="TResolved"></typeparam>
+	/// <remarks>
+	/// Used for 'singly' registered objects. An example is like the MVC Controller Factory, only one exists application wide and it can
+	/// be get/set.
+	/// </remarks>
+	internal abstract class SingleObjectResolverBase<TResolver, TResolved> : ResolverBase<TResolver> 
+		where TResolver : class 
+		where TResolved : class
+	{
+		TResolved _resolved;
+		readonly bool _canBeNull;
+
+		protected SingleObjectResolverBase()
+			: this(false)
+		{ }
+
+		protected SingleObjectResolverBase(TResolved value)
+			: this(false)
+		{
+			_resolved = value;
+		}
+
+		protected SingleObjectResolverBase(bool canBeNull)
+		{
+			_canBeNull = canBeNull;
+		}
+
+		protected SingleObjectResolverBase(TResolved value, bool canBeNull)
+		{
+			_resolved = value;
+			_canBeNull = canBeNull;
+		}
+
+		/// <summary>
+		/// Gets/sets the value of the object
+		/// </summary>
+		protected TResolved Value
+		{
+			get
+			{
+				return _resolved;
+			}
+
+			set
+			{
+				Resolution.EnsureNotFrozen();
+
+				if (!_canBeNull && value == null)
+					throw new ArgumentNullException("value");
+				_resolved = value;
+			}
+		}
+	}
+}