Refactored the traversal, ishelper, etc... methods to be extension methods on IPublishedContent so now all of these methods are available on the Typed object not just the dynamic object which makes a whole lot more sense... and you can have intellisense.

Updated DynamicPublishedContent's methods to just proxy calls to the new extension methods so that all of the logic is contained in one place.
Added new GetRootDocuments to the IPublishedContentStore since we need this in order to get the root list of documents for many of these methods.
Fixed an issue with the DynamicNode to IPublishedContent converter.
Fixed many of the failing unit tests.

src/Umbraco.Tests/DynamicDocument/DynamicDocumentTestsBase.cs

@@ -17,14 +17,14 @@ namespace Umbraco.Tests.DynamicDocument
 		{
 			base.Initialize();
 
-			DynamicPublishedContentDataSourceResolver.Current = new DynamicPublishedContentDataSourceResolver(
-				new TestDynamicPublishedContentDataSource());
+			
+
 		}
 
 		public override void TearDown()
 		{
 			base.TearDown();
-			DynamicPublishedContentDataSourceResolver.Reset();
+		
 		}
 
 		protected override bool RequiresDbSetup
@@ -32,20 +32,6 @@ namespace Umbraco.Tests.DynamicDocument
 			get { return false; }
 		}
 
-		private class TestDynamicPublishedContentDataSource : IDynamicPublishedContentDataSource
-		{
-			public Guid GetDataType(string docTypeAlias, string propertyAlias)
-			{
-				if (propertyAlias == "content")
-				{
-					//return the rte type id
-					return Guid.Parse("5e9b75ae-face-41c8-b47e-5f4b0fd82f83");
-				}
-
-
-				return Guid.Empty;
-			}
-		}
 
 		/// <summary>
 		/// Returns the dynamic node/document to run tests against