[ADF-4878] Refactor, Split ADF About component (#5064)

* Refactor, Split ADF About component

* [ADF-4878] Add documentation

* [ADF-4878] Rename Component

* [ADF-4878] Implement comments

* [ADF-4878] Update documentation for about components

docs/core/components/about.component.md

@@ -1,47 +0,0 @@
----
-Title: About Component
-Added: v2.4.0
-Status: Experimental
-Last reviewed: 2019-03-19
----
-
-# [About Component](../../../lib/core/about/about.component.ts "Defined in about.component.ts")
-
-Shows a general version and status overview of the installed ADF library.
-
-## Basic Usage
-
-With default input values
-
-```html
-<adf-about></adf-about>
-```
-
-With custom input values:
-
-```html
-<adf-about
-    githubUrlCommitAlpha="https://github.com/Alfresco/alfresco-ng2-components/commits/"
-    showExtensions="false"
-    regexp="^(@alfresco)"
-></adf-about>
-```
-
-## Class members
-
-### Properties
-
-| Name | Type | Default value | Description |
-| ---- | ---- | ------------- | ----------- |
-| githubUrlCommitAlpha | `string` |  | Commit corresponding to the version of ADF to be used. |
-| regexp | `string` | "^(@alfresco)" | Regular expression for filtering dependencies packages. |
-| showExtensions | `boolean` | true | Toggles showing/hiding of extensions block. |
-
-## Details
-
-Use this component to get a general overview of the version of ADF installed and the status of the [Content service](../services/content.service.md) and [Process service](../../process-services/services/process.service.md).
-
-Note that at the moment this component is mostly for internal use and it requires you to:
-
--   create a version file : `npm list --depth=0 --json=true --prod=true > versions.json`
--   provide this version file in the `dist` folder