Merge remote-tracking branch 'origin/v8/8.16' into v9/feature/merge_v8_11082021

# Conflicts:
#	.github/CONTRIBUTING.md
#	build/NuSpecs/UmbracoCms.Core.nuspec
#	build/NuSpecs/UmbracoCms.Web.nuspec
#	build/NuSpecs/UmbracoCms.nuspec
#	src/SolutionInfo.cs
#	src/Umbraco.Core/Cache/AppCaches.cs
#	src/Umbraco.Core/Cache/AppPolicedCacheDictionary.cs
#	src/Umbraco.Core/Cache/DeepCloneAppCache.cs
#	src/Umbraco.Core/Cache/WebCachingAppCache.cs
#	src/Umbraco.Core/CompositionExtensions.cs
#	src/Umbraco.Core/Models/Identity/BackOfficeIdentityUser.cs
#	src/Umbraco.Core/Models/PropertyGroupCollection.cs
#	src/Umbraco.Core/Models/PropertyTypeCollection.cs
#	src/Umbraco.Core/Persistence/Repositories/Implement/ExternalLoginRepository.cs
#	src/Umbraco.Core/ReadLock.cs
#	src/Umbraco.Core/Routing/SiteDomainMapper.cs
#	src/Umbraco.Core/UpgradeableReadLock.cs
#	src/Umbraco.Core/WriteLock.cs
#	src/Umbraco.Examine/ExamineExtensions.cs
#	src/Umbraco.Infrastructure/Examine/UmbracoFieldDefinitionCollection.cs
#	src/Umbraco.Infrastructure/Persistence/Dtos/ContentTypeDto.cs
#	src/Umbraco.Infrastructure/Persistence/Dtos/DictionaryDto.cs
#	src/Umbraco.Infrastructure/Persistence/Repositories/Implement/MemberGroupRepository.cs
#	src/Umbraco.Infrastructure/Persistence/Repositories/Implement/TemplateRepository.cs
#	src/Umbraco.Infrastructure/Persistence/Repositories/Implement/UserRepository.cs
#	src/Umbraco.Infrastructure/Services/IdKeyMap.cs
#	src/Umbraco.Infrastructure/Services/Implement/ContentService.cs
#	src/Umbraco.ModelsBuilder.Embedded/PureLiveModelFactory.cs
#	src/Umbraco.Tests/App.config
#	src/Umbraco.Web.BackOffice/Controllers/EntityController.cs
#	src/Umbraco.Web.UI.Client/package.json
#	src/Umbraco.Web.UI.NetCore/umbraco/config/lang/da.xml
#	src/Umbraco.Web.UI.NetCore/umbraco/config/lang/en.xml
#	src/Umbraco.Web.UI.NetCore/umbraco/config/lang/en_us.xml
#	src/Umbraco.Web.UI/Umbraco.Web.UI.csproj
#	src/Umbraco.Web.UI/Umbraco/config/lang/cy.xml
#	src/Umbraco.Web.UI/web.Template.config
#	src/Umbraco.Web/CacheHelperExtensions.cs
#	src/Umbraco.Web/Editors/RelationTypeController.cs
#	src/Umbraco.Web/Logging/WebProfilerProvider.cs
#	src/Umbraco.Web/Models/Mapping/MemberMapDefinition.cs
#	src/Umbraco.Web/PublishedCache/NuCache/MemberCache.cs
#	src/Umbraco.Web/Routing/ContentFinderByConfigured404.cs
#	src/Umbraco.Web/Routing/NotFoundHandlerHelper.cs
#	src/Umbraco.Web/Security/BackOfficeUserManager.cs
#	src/Umbraco.Web/Umbraco.Web.csproj

src/Umbraco.PublishedCache.NuCache/DataSource/BTree.DictionaryOfPropertyDataSerializer.cs

@@ -11,6 +11,7 @@ namespace Umbraco.Cms.Infrastructure.PublishedCache.DataSource
     /// </summary>
     internal class DictionaryOfPropertyDataSerializer : SerializerBase, ISerializer<IDictionary<string, PropertyData[]>>, IDictionaryOfPropertyDataSerializer
     {
+        private static readonly PropertyData[] Empty = Array.Empty<PropertyData>();
         public IDictionary<string, PropertyData[]> ReadFrom(Stream stream)
         {
 
@@ -26,6 +27,11 @@ namespace Umbraco.Cms.Infrastructure.PublishedCache.DataSource
 
                 // read values count
                 var vcount = PrimitiveSerializer.Int32.ReadFrom(stream);
+                if(vcount == 0)
+                {
+                    dict[key] = Empty;
+                    continue;
+                }
 
                 // create pdata and add to the dictionary
                 var pdatas = new PropertyData[vcount];

src/Umbraco.PublishedCache.NuCache/DataSource/MsgPackContentNestedDataSerializer.cs

@@ -101,6 +101,10 @@ namespace Umbraco.Cms.Infrastructure.PublishedCache.DataSource
                     {
                         property.Value = LZ4Pickler.Pickle(Encoding.UTF8.GetBytes((string)property.Value), LZ4Level.L00_FAST);
                     }
+                    foreach (var property in propertyAliasToData.Value.Where(x => x.Value != null && x.Value is int intVal))
+                    {
+                        property.Value = Convert.ToBoolean((int)property.Value);
+                    }
                 }
             }
         }

src/Umbraco.PublishedCache.NuCache/MemberCache.cs

@@ -1,17 +1,18 @@
+using System;
 using Umbraco.Cms.Core.Models;
 using Umbraco.Cms.Core.Models.PublishedContent;
 using Umbraco.Cms.Core.PublishedCache;
 
 namespace Umbraco.Cms.Infrastructure.PublishedCache
 {
-    public class MemberCache : IPublishedMemberCache
+    public class MemberCache : IPublishedMemberCache, IDisposable
     {
         private readonly IPublishedSnapshotAccessor _publishedSnapshotAccessor;
         private readonly IVariationContextAccessor _variationContextAccessor;
         private readonly IPublishedModelFactory _publishedModelFactory;
         private readonly PublishedContentTypeCache _contentTypeCache;
         private readonly bool _previewDefault;
-
+        private bool _disposedValue;
         public MemberCache(
             bool previewDefault,
             PublishedContentTypeCache contentTypeCache,
@@ -36,5 +37,28 @@ namespace Umbraco.Cms.Infrastructure.PublishedCache
             => PublishedMember.Create(member, GetContentType(member.ContentTypeId), _previewDefault, _publishedSnapshotAccessor, _variationContextAccessor, _publishedModelFactory);
 
         #endregion
+
+        #region IDisposable
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (!_disposedValue)
+            {
+                if (disposing)
+                {
+                    _contentTypeCache.Dispose();
+                }
+
+                _disposedValue = true;
+            }
+        }
+
+        public void Dispose()
+        {
+            // Do not change this code. Put cleanup code in 'Dispose(bool disposing)' method
+            Dispose(disposing: true);
+        }
+
+        #endregion
     }
 }

src/Umbraco.PublishedCache.NuCache/PublishedSnapshot.cs

@@ -35,6 +35,7 @@ namespace Umbraco.Cms.Infrastructure.PublishedCache
             {
                 ContentCache.Dispose();
                 MediaCache.Dispose();
+                MemberCache.Dispose();
             }
         }