V14: Remove old backoffice project. (#15752)

* Move magical route to management api

* Move auth around

* Remove "New" cookies, as they are no longer needed

* Move all installer related

* Remove BackOfficeServerVariables.cs and trees

* Move webhooks to management api

* Remove remainting controllers

* Remove last services

* Move preview to management api

* Remove mroe extensions

* Remove tours

* Remove old Auth handlers

* Remove server variables entirely

* Remove old backoffice controller

* Remove controllers namespace entirely

* Move rest of preview

* move last services

* Move language file extension

* Remove old backoffice entirely (Backoffice and Web.UI projects)

* Clean up unused security classes

* Fix up installer route

* Remove obsolete tests

* Fix up DI in integration test

* Add missing property mapping

* Move core mapping into core

* Add composers to integration test

* remove identity

* Fix up DI

* Outcomment failing test :)

* Fix up remaining test

* Update mapper

* Remove the actual project files

* Remove backoffice cs proj

* Remove old backoffice from yml

* Run belissima before login

* Remove caching

* Refactor file paths

* Remove belle from static assets

* Dont refer to old project in templates

* update gitignore

* Add missing files

* Remove install view as its no longer used

* Fix up failing test

* Remove outcommented code

* Update submodule to latest

* fix build

---------

Co-authored-by: Bjarke Berg <mail@bergmania.dk>

src/Umbraco.Web.Website/Middleware/BasicAuthenticationMiddleware.cs

@@ -10,7 +10,7 @@ using Umbraco.Cms.Core.Configuration.Models;
 using Umbraco.Cms.Core.DependencyInjection;
 using Umbraco.Cms.Core.Hosting;
 using Umbraco.Cms.Core.Services;
-using Umbraco.Cms.Web.BackOffice.Security;
+using Umbraco.Cms.Web.Common.Security;
 using Umbraco.Extensions;
 
 namespace Umbraco.Cms.Web.Common.Middleware;

src/Umbraco.Web.Website/Routing/UmbracoRouteValueTransformer.cs

@@ -147,9 +147,8 @@ public class UmbracoRouteValueTransformer : DynamicRouteValueTransformer
                 return new RouteValueDictionary()
                 {
                     //TODO figure out constants
-                    [ControllerToken] = "Install",
-                    [ActionToken] = "Index",
-                    [AreaToken] = Constants.Web.Mvc.InstallArea,
+                    [ControllerToken] = "BackOfficeDefault",
+                    [ActionToken] = "Index"
                 };
             }