Move how to guides to community articles.

docs/en/How-To/Customize-SignIn-Manager.md → docs/en/Community-Articles/2020-04-19-Customize-the-SignIn-Manager/POST.md

@@ -94,8 +94,3 @@ PreConfigure<IdentityBuilder>(identityBuilder =>
 ## The Source Code
 
 You can find the source code of the completed example [here](https://github.com/abpframework/abp-samples/tree/master/aspnet-core/Authentication-Customization).
-
-## See Also
-
-* [How to Customize the Login Page for MVC / Razor Page Applications](Customize-Login-Page-MVC.md).
-* [Identity Management Module](../Modules/Identity.md).

docs/en/How-To/Azure-Active-Directory-Authentication-MVC.md → docs/en/Community-Articles/2020-04-27-Use-Azure-Active-Directory-Authentication-for-MVC-Razor-Page-Applications/POST.md

@@ -205,8 +205,3 @@ You can find the source code of the completed example [here](https://github.com/
       	await Task.CompletedTask;
       });
     ````
-
-## See Also
-
-* [How to Customize the Login Page for MVC / Razor Page Applications](Customize-Login-Page-MVC.md).
-* [How to Customize the SignIn Manager for ABP Applications](Customize-SignIn-Manager.md).

docs/en/How-To/Customize-Login-Page-MVC.md → docs/en/Community-Articles/2020-05-09-Customize-the-Login-Page-for-MVC-Razor-Page-Applications/POST.md

@@ -106,7 +106,3 @@ Just changed the `@model` to `Acme.BookStore.Web.Pages.Account.CustomLoginModel`
 ## The Source Code
 
 You can find the source code of the completed example [here](https://github.com/abpframework/abp-samples/tree/master/aspnet-core/Authentication-Customization).
-
-## See Also
-
-* [ASP.NET Core (MVC / Razor Pages) User Interface Customization Guide](../UI/AspNetCore/Customization-User-Interface.md).

docs/en/How-To/Index.md

@@ -1,9 +0,0 @@
-# "How To" Guides
-
-This section contains "how to" guides for some specific questions frequently asked. While some of them are common development tasks and not directly related to the ABP Framework, we think it is useful to have some concrete examples those directly work with your ABP based applications.
-
-## Authentication
-
-* [How to Customize the Login Page for MVC / Razor Page Applications](Customize-Login-Page-MVC.md)
-* [How to Use the Azure Active Directory Authentication for MVC / Razor Page Applications](Azure-Active-Directory-Authentication-MVC.md)
-* [How to Customize the SignIn Manager for ABP Applications](Customize-SignIn-Manager.md)

docs/en/docs-nav.json

@@ -93,10 +93,6 @@
             }
           ]
         },
-        {
-          "text": "\"How to\" Guides",
-          "path": "How-To/Index.md"
-        },
         {
           "text": "Migrating from the ASP.NET Boilerplate",
           "path": "AspNet-Boilerplate-Migration-Guide.md"