[ADF-4152] Restructured remaining doc folders and fixed links (#4441)

* [ADF-4152] Moved proc services cloud docs to subfolders

* [ADF-4152] Fixed links in PS cloud docs

* [ADF-4152] Added subfolders and checked links for extensions and insights docs

* [ADF-4152] Moved proc services cloud docs to subfolders

* [ADF-4152] Fixed links in PS cloud docs

* [ADF-4152] Added subfolders and checked links for extensions and insights docs

* [ADF-4152] Fixed links in Proc cloud, Insights and Extensions docs

* [ADF-4152] Updated links in user guide

* [ADF-4152] Fixed broken links in tutorials

* [ADF-4152] Fixed remaining links in core docs

* [ADF-4152] Fixed remaining links in proc services docs

* [ADF-4152] Fixed remaining links in content services docs

* [ADF-4152] Fixed links in breaking changes docs

* [ADF-4152] Updated main README index page

* [ADF-4152] Fixed glitches with preview ext component docs

docs/process-services-cloud/components/group-cloud.component.md

@@ -0,0 +1,93 @@
+---
+Title: Group Cloud component
+Added: v3.0.0
+Status: Experimental
+Last reviewed: 2019-01-15
+---
+
+# [Group Cloud component](../../../lib/process-services-cloud/src/lib/group/components/group-cloud.component.ts "Defined in group-cloud.component.ts")
+
+Searches Groups.
+
+## Basic Usage
+
+```html
+<adf-cloud-group
+    [appName]="'simple-app'"
+    [mode]="'multiple'">
+</adf-cloud-group>
+```
+
+![adf-cloud-group](../../docassets/images/group-cloud.component.png)
+
+## Class members
+
+### Properties
+
+| Name | Type | Default value | Description |
+| ---- | ---- | ------------- | ----------- |
+| appName | `string` |  | Name of the application. If specified this shows the users who have access to the app. |
+| mode | `string` |  | User selection mode (single/multiple). |
+| preSelectGroups | [`GroupModel`](../../../lib/process-services-cloud/src/lib/group/models/group.model.ts)`[]` | \[] | Array of users to be pre-selected. This pre-selects all users in multi selection mode and only the first user of the array in single selection mode. |
+| roles | `string[]` | \[] | Role names of the groups to be listed. |
+| title | `string` |  | Title of the field |
+
+### Events
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| removeGroup | [`EventEmitter`](https://angular.io/api/core/EventEmitter)`<`[`GroupModel`](../../../lib/process-services-cloud/src/lib/group/models/group.model.ts)`>` | Emitted when a group is removed. |
+| selectGroup | [`EventEmitter`](https://angular.io/api/core/EventEmitter)`<`[`GroupModel`](../../../lib/process-services-cloud/src/lib/group/models/group.model.ts)`>` | Emitted when a group is selected. |
+
+## Details
+
+### Selection Mode
+
+You can specify either single selection or multiple selection (single
+is the default):
+
+#### Single selection
+
+```html
+<adf-cloud-group></adf-cloud-group>
+```
+
+![adf-cloud-group](../../docassets/images/group-cloud.component-single.png)
+
+#### Multiple selection
+
+```html
+<adf-cloud-group
+    [mode]="'multiple'">
+</adf-cloud-group>
+```
+
+![adf-cloud-group](../../docassets/images/group-cloud.component-multiple-mode.png)
+
+### Pre-selection
+
+Usage example:
+
+```ts
+import { ObjectDataTableAdapter }  from '@alfresco/adf-core';
+
+@Component({...})
+export class MyComponent {
+    groups: any;
+
+    constructor() {
+        this.groups =
+            [
+                {id: 1, name: 'Group 1'},
+                {id: 2, name: 'Group 2'}
+            ];
+    }
+}
+```
+
+```html
+<adf-cloud-group
+    [mode]="'multiple'"
+    [preSelectGroups]="groups">
+</adf-cloud-group>
+```