upgrade guide (#2325)

* upgrade from ACA 2.4.0 to 2.5.0

* * minor changes

* * remove aca prefix

docs/extending/README.md

@@ -22,5 +22,3 @@ Learn how to extend the features of the Alfresco Content Application.
 - [Creating custom evaluators](/extending/creating-custom-evaluators)
 - [Custom extension loaders](/extending/custom-extension-loaders)
 - [Redistributable libraries](/extending/redistributable-libraries)
-- [Application Hook](/extending/application-hook)
-- [Tutorials](/../tutorials/)

docs/features/README.md

@@ -25,3 +25,4 @@ This application simplifies the complexity of Content Management and provides co
 - [Version Manager](/features/version-manager)
 - [Search results](/features/search-results)
 - [Search forms](/features/search-forms)
+- [Application Hook](/extending/application-hook)

docs/toc.md

@@ -41,4 +41,6 @@
   - [How to extend File lists](/tutorials/file-lists)
   - [How to extend File Preview](/tutorials/file-preview)
   - [How to extend The Search Form](/tutorials/search-form)
+- [Upgrade guide](/upgrade-guide/)
+  - [Upgrade from v2.4.0 to v2.5.0](/upgrade-guide/upgrade24-45)    
 - [Get help](/help)

docs/tutorials/README.md

@@ -20,3 +20,4 @@ Learn more about developing with the Alfresco Content Application.
 - [File Lists](/tutorials/file-lists)
 - [Search Form](/tutorials/search-form)
 - [Content Metadata](/tutorials/content-metadata)
+- [Application Hook](/extending/application-hook)

docs/upgrade-guide/README.md

@@ -0,0 +1,12 @@
+---
+Title: Upgrade guides
+Github only: true
+---
+
+# Upgrade guides
+
+Below are links to the upgrade guides notes for released versions
+
+## Contents
+
+- [Upgrade from v2.4.o to v2.5.0](/upgrade-guide/upgrade24-45)

docs/upgrade-guide/upgrade24-45.md

@@ -0,0 +1,36 @@
+---
+Title: Upgrade from v2.4.0 to v2.5.0
+Github only: true
+---
+
+# Upgrade from v2.4.0 to v2.5.0
+
+This guide explains how to upgrade your ACA v2.4.0 project to work with v2.5.0.
+
+Do not skip this task, if you want your application to be updated to a most recent version of ACA. 
+Upgrades of multiple versions of ACA cannot be done in one step only, but should follow the chain of sequential updates. 
+
+**Note:** the steps described below might involve making changes
+to your code. If you are working with a versioning system then you should
+commit any changes you are currently working on. If you aren't using versioning
+then be sure to make a backup copy of your project before going ahead with the
+upgrade.
+
+### Search Forms
+We released a new feature called search forms. It would allow the user to set up numerous search configurations, and it could be extended from the extension. 
+
+![](../images/search-layout-2.5.0.png)
+
+We moved the search object to [`app.extension.json`](https://github.com/Alfresco/alfresco-content-app/blob/v2.5.0/src/assets/app.extensions.json#L1181) from [`app.config.json`](https://github.com/Alfresco/alfresco-content-app/blob/v2.4.0/src/app.config.json#L192) in order to enable extendable search forms.
+
+#### How to opt to this?
+ If you don't have any search override, you can just remove the [`search`](https://github.com/Alfresco/alfresco-content-app/blob/v2.4.0/src/app.config.json#L192) configuration from app.config.json
+
+#### What if search configuration is customised?
+ The customised configuration should be moved to the custom extension own by you. [check here](/tutorials/search-form)
+ 
+#### How can I know if search setup is customised?
+ Just compare your app.config search object with [old configuration](https://github.com/Alfresco/alfresco-content-app/blob/v2.4.0/src/app.config.json#L192)
+ 
+### See also
+  - [How to extend The Search Form](/tutorials/search-form)