[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/dialogs/confirm.dialog.md

@@ -0,0 +1,47 @@
+---
+Title: Confirm dialog component
+Added: v2.3.0
+Status: Active
+Last reviewed: 2019-01-22
+---
+
+# [Confirm dialog component](../../../lib/content-services/dialogs/confirm.dialog.ts "Defined in confirm.dialog.ts")
+
+Requests a yes/no choice from the user.
+
+![Confirm dialog](../../docassets/images/ConfirmDialog.png)
+
+## Basic Usage
+
+```ts
+constructor(private dialog: MatDialog) {}
+
+...
+
+let files = [
+    // Files defined here...
+];
+
+const dialogRef = this.dialog.open(ConfirmDialogComponent, {
+    data: {
+        title: 'Upload',
+        message: `Are you sure you want to upload ${files.length} file(s)?`
+    },
+    minWidth: '250px'
+});
+
+dialogRef.afterClosed().subscribe((result) => {
+    if (result === true) {
+        event.resumeUpload();
+    }
+});
+```
+
+## Details
+
+This component lets the user make a yes/no choice to confirm an action. Use the
+Angular [`MatDialog`](https://material.angular.io/components/dialog/overview)
+service to open the dialog, as shown in the example, and pass a `data` object
+with properties for the `title` and `message` to show. The `afterClosed` event
+of the [`MatDialog`](https://material.angular.io/components/dialog/overview)
+gives you the user's choice via the `result` parameter.

docs/content-services/dialogs/library.dialog.md

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+---
+Title: Library dialog component
+Added: v3.0.0
+Status: Active
+Last reviewed: 2018-12-07
+---
+
+# [Library dialog component](../../../lib/content-services/dialogs/library/library.dialog.ts "Defined in library.dialog.ts")
+
+Creates a new Content Services document library/site.
+
+![Dropdown sites](../../docassets/images/CreateLibraryDialog.png)
+
+## Basic Usage
+
+```html
+<adf-library-dialog
+    (success)="useLibraryDetails($event)"
+    (error)="handleError()"
+>
+</adf-library-dialog>
+```
+
+## Class members
+
+### Events
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| error | [`EventEmitter`](https://angular.io/api/core/EventEmitter)`<any>` | Emitted when an error occurs. |
+| success | [`EventEmitter`](https://angular.io/api/core/EventEmitter)`<any>` | Emitted when the new library is created successfully. The event parameter is a [SiteEntry](https://github.com/Alfresco/alfresco-js-api/blob/master/src/alfresco-core-rest-api/docs/SiteEntry.md) object with the details of the newly-created library. |
+
+## Details
+
+This component lets the user create a new document library/site with the usual
+name, ID, description and access restrictions. See the
+[Sites](https://docs.alfresco.com/6.0/concepts/sites-intro.html)
+section of the Content Services documentation for more information.
+
+## See also
+
+-   [Sites dropdown component](../components/sites-dropdown.component.md)