Merge remote-tracking branch 'origin/netcore/netcore' into netcore/task/front-end-routing

# Conflicts:
#	src/Umbraco.Tests/PublishedContent/NuCacheChildrenTests.cs
#	src/Umbraco.Tests/Testing/UmbracoTestBase.cs
#	src/Umbraco.Web.BackOffice/Extensions/BackOfficeApplicationBuilderExtensions.cs

src/Umbraco.Tests/TestHelpers/BaseUsingSqlCeSyntax.cs

@@ -43,7 +43,7 @@ namespace Umbraco.Tests.TestHelpers
             var logger = new ProfilingLogger(Mock.Of<ILogger<ProfilingLogger>>(), Mock.Of<IProfiler>());
             var typeFinder = TestHelper.GetTypeFinder();
             var typeLoader = new TypeLoader(typeFinder, NoAppCache.Instance,
-                new DirectoryInfo(ioHelper.MapPath("~/App_Data/TEMP")),
+                new DirectoryInfo(ioHelper.MapPath(Constants.SystemDirectories.TempData)),
                 Mock.Of<ILogger<TypeLoader>>(),
                 logger,
                 false);