[ADF-4152] Restructured Content Services docs (#4429)

* [ADF-4152] Moved content services docs to subfolders

* [ADF-4152] Manual URL fixes for cont services docs

* [ADF-4152] Moved content services docs to subfolders

* [ADF-4152] Manual URL fixes for cont services docs

* [ADF-4152] Updated doc index pages for content services

docs/content-services/directives/content-node-share.directive.md

@@ -0,0 +1,69 @@
+---
+Title: Node Public File Share Directive
+Added: v2.3.0
+Status: Active
+Last reviewed: 2018-09-13
+---
+
+# [Node Public File Share Directive](../../../lib/content-services/content-node-share/content-node-share.directive.ts "Defined in content-node-share.directive.ts")
+
+Creates and manages public shared links for files.
+
+![adf-share](../../docassets/images/share-directive.png)
+
+## Basic Usage
+
+```html
+<adf-toolbar>
+    <button mat-icon-button
+            #shared="adfShare"
+            [disabled]="!shared.isFile"
+            [baseShareUrl]="http://localhost:8080/myrouteForShareFile/"
+            [adf-share]="documentList.selection[0]">
+            <mat-icon>share</mat-icon>
+    </button>
+</adf-toolbar>
+
+<adf-document-list #documentList ...>
+ ...
+</adf-document-list>
+```
+
+## Class members
+
+### Properties
+
+| Name | Type | Default value | Description |
+| ---- | ---- | ------------- | ----------- |
+| baseShareUrl | `string` |  | Prefix to add to the generated link. |
+| node | [`NodeEntry`](https://github.com/Alfresco/alfresco-js-api/blob/master/src/alfresco-core-rest-api/docs/NodeEntry.md) |  | [Node](https://github.com/Alfresco/alfresco-js-api/blob/development/src/api/content-rest-api/docs/Node.md) to share. |
+
+## Details
+
+This dialog will generate a link with the form "baseShareUrl + sharedId".
+For example, if you set the input parameter as follows:
+
+    [baseShareUrl]="http://localhost:8080/myrouteForShareFile/"
+
+...or through `app.config.json`:
+
+    {
+        ...
+        "baseShareUrl": 'http://external/url',
+        ...
+    }
+
+...then the directive will ask the [Content service](../../core/services/content.service.md) to generate
+a `sharedId` for the file. This will create a URL like the following:
+
+    http://localhost:8080/myrouteForShareFile/NEW_GENERATED_SHAREID
+
+To use this, you will need to implement some code that gets the `NEW_GENERATED_SHAREID` with the router
+and passes it to a [Viewer component](../../core/components/viewer.component.md):
+
+```html
+<adf-viewer
+    [sharedLinkId]="NEW_GENERATED_SHAREID"
+    [allowGoBack]="false">
+</adf-viewer>
+```