Merge remote-tracking branch 'origin/v8/dev' into netcore/dev

# Conflicts:
#	src/Umbraco.Infrastructure/Runtime/SqlMainDomLock.cs
#	src/Umbraco.PublishedCache.NuCache/PublishedSnapshotService.cs
#	src/Umbraco.Web.UI.Client/src/views/users/user.controller.js
#	src/Umbraco.Web/Models/Trees/MenuItemList.cs
#	src/Umbraco.Web/Runtime/WebInitialComposer.cs
#	src/Umbraco.Web/Trees/RelationTypeTreeController.cs
#	src/Umbraco.Web/UmbracoApplication.cs

src/Umbraco.Web.UI/config/BackOfficeTours/getting-started.json

@@ -14,6 +14,10 @@
                 "content": "<p>Thank you for using Umbraco! Would you like to stay up-to-date with Umbraco product updates, security advisories, community news and special offers? Sign up for our newsletter and never miss out on the latest Umbraco news.</p> <p class='notice'>By signing up, you agree that we can use your info according to our <a href='https://umbraco.com/about-us/privacy/'>privacy policy</a>.</p>",
                 "view": "emails",
                 "type": "promotion"
+            },
+            {
+                "title": "Thank you for subscribing to our mailing list",
+                "view": "confirm"
             }
         ]
     },