Merge branch 'UKFest-U4-4792' of https://github.com/opelpanfan/Umbraco-CMS into opelpanfan-UKFest-U4-4792

Conflicts:
	src/Umbraco.Core/Services/ContentService.cs

src/Umbraco.Tests/Services/ContentServiceTests.cs

@@ -141,6 +141,20 @@ namespace Umbraco.Tests.Services
             Assert.AreEqual(20, contentService.CountDescendants(parent.Id));
         }
 
+        [Test]
+        public void GetAncestors_Returns_Empty_List_When_Path_Is_Null()
+        {
+            // Arrange
+            var contentService = ServiceContext.ContentService;
+
+            // Act
+            var current = new Mock<IContent>();
+            var res = contentService.GetAncestors(current.Object);
+
+            // Assert
+            Assert.IsEmpty(res);
+        }
+
         [Test]
         public void Tags_For_Entity_Are_Not_Exposed_Via_Tag_Api_When_Content_Is_Recycled()
         {