Remove duplicated themes documentation. (keycloak#42571)

* Remove duplicated themes documentation.

Signed-off-by: Stan Silvert <[email protected]>

* Move Theme SPI documentation to Themes Guide

Signed-off-by: Stan Silvert <[email protected]>

* Fix link so test will pass.

Fixes keycloak#42396

Signed-off-by: Stan Silvert <[email protected]>

* Fix broken links.

Closes keycloak#42396

Signed-off-by: Stan Silvert <[email protected]>

* Fix broken link.

Closes keycloak#42396

Signed-off-by: Stan Silvert <[email protected]>

---------

Signed-off-by: Stan Silvert <[email protected]>

Author: ssilvert

docs/documentation/release_notes/topics/12_0_0.adoc

@@ -39,7 +39,7 @@ The old PatternFly 3 runs simultaneously with the new one, so it's possible to h
 
 There are also design changes in the login theme for better user experience.
 You can even define an icon for your custom Identity providers.
-For details, please refer to the link:{developerguide_link}#custom-identity-providers-icons[docs].
+For details, please refer to the link:https://www.keycloak.org/ui-customization/themes#custom-identity-providers-icons[themes guide].
 
 == Gatekeeper EOL
 Gatekeeper reached end of life, in November 21. This means that we no longer support, or update it. The announcement is available https://www.keycloak.org/2020/08/sunsetting-louketo-project.adoc[here].

docs/documentation/server_admin/topics/identity-broker/configuration.adoc

@@ -16,7 +16,7 @@ image:images/identity-providers.png[Identity Providers]
 .Add Facebook identity Provider
 image:images/add-identity-provider.png[Add Facebook Identity Provider]
 +
-When you configure an identity provider, the identity provider appears on the {project_name} login page as an option. You can place custom icons on the login screen for each identity provider. See  link:{developerguide_link}#custom-identity-providers-icons[custom icons] for more information.
+When you configure an identity provider, the identity provider appears on the {project_name} login page as an option. You can place custom icons on the login screen for each identity provider. See  https://www.keycloak.org/ui-customization/themes#custom-identity-providers-icons[custom icons] for more information.
 +
 .IDP login page
 image:images/identity-provider-login-page.png[]

docs/documentation/server_admin/topics/realms/proc-configuring-internationalization.adoc

@@ -43,5 +43,5 @@ user has actively switched the locale through the locale selector on the login p
 this point.
 
 If you want to change the logic for selecting the locale, you have an option to create custom `LocaleSelectorProvider`. For details, please refer to the
-link:{developerguide_link}#_locale_selector[{developerguide_name}].
+link:https://www.keycloak.org/ui-customization/themes[Working with themes: Locale selector].
 

docs/documentation/server_admin/topics/users/user-profile.adoc

@@ -906,4 +906,4 @@ If you want to use internationalized messages when configuring attributes, attri
 set their display name, description, and values, using a placeholder that will translate to a message from a message bundle.
 
 For that, you can use a placeholder to resolve messages keys such as `${myAttributeName}`, where `myAttributeName` is the key for a message in a message bundle. For more details,
-look at link:{developerguide_link}#messages[{developerguide_name}] about how to add message bundles to custom themes.
+look at link:https://www.keycloak.org/ui-customization/localization#_localizing_messages_in_a_theme[Localizing messages in a theme] about how to add message bundles to custom themes.

docs/documentation/server_development/topics.adoc

@@ -1,10 +1,5 @@
 include::topics/preface.adoc[]
 include::topics/admin-rest-api.adoc[]
-include::topics/themes.adoc[]
-include::topics/themes-react.adoc[]
-include::topics/themes-selector.adoc[]
-include::topics/themes-resources.adoc[]
-include::topics/locale-selector.adoc[]
 include::topics/identity-brokering.adoc[]
 include::topics/identity-brokering/tokens.adoc[]
 include::topics/identity-brokering/account-linking.adoc[]

docs/documentation/server_development/topics/auth-spi.adoc

@@ -768,9 +768,9 @@ getReferenceCategory() is just a category the Authenticator belongs to.
 
 ==== Adding an authenticator form
 
-{project_name} comes with a Freemarker <<_themes,theme and template engine>>.
+{project_name} comes with a Freemarker https://www.keycloak.org/ui-customization/themes[theme and template engine].
 The createForm() method you called within authenticate() of your Authenticator class, builds an HTML page from a file within your login theme: `secret-question.ftl`.
-This file should be added to the `theme-resources/templates` in your JAR, see <<_theme_resource,Theme Resource Provider>> for more details.
+This file should be added to the `theme-resources/templates` in your JAR, see https://www.keycloak.org/ui-customization/themes[Working with themes: Theme resource provider] for more details.
 
 Let's take a bigger look at secret-question.ftl  Here's a small code snippet: