Fixes HasContent if there is actually no content (new install).

Fixes issue with TreeDefinitionCollection not initializing when accessing singleton... not sure how i overlooked that before. This fixes
issues with MNTP initialization and probably some other tree stuff.
Removes warning log in umbracomodule for not a document as this just takes up space in the log.
Fixes issue with logger that was logging 'Info' for our internal Debug calls.

src/Umbraco.Core/ObjectResolution/LegacyTransientObjectsResolver.cs

@@ -33,7 +33,7 @@ namespace Umbraco.Core.ObjectResolution
 		/// TODO: However, it would make much more sense to do this and would speed up the application plus this would make the GetById method much easier.
 		/// </remarks>
 		protected LegacyTransientObjectsResolver(IEnumerable<Type> refreshers)
-			: base(ObjectLifetimeScope.Transient) // false = new objects every time
+			: base(ObjectLifetimeScope.Transient) //  new objects every time
 		{
 			foreach (var l in refreshers)
 			{