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.
simplified some of the DynamicPublishedContent methods to accept Func<IPublishedContent> instead of Func<DynamicPublishedContent>, made the IsHelper method private as this shouldn't be exposed.
renamed other objects starting with DynamicDocument to DynamicPublishedContent
the codebehind still exist in the web for backwards compatibility. Updated the logging so that the LogHelper
can now write to a TraceContext specified if debugging which is handy if we want to write to the normal trace.
Adds a few unit tests for DynamicDocument/DynamicNode and fixes both to properly support the 'Take' method
as this wasn't really working. Not sure how or why it was working previously. Have also allowed for extension
methods to be executed against either of these objects that accept IQueryable which was not supported before.
