[ADF-4128] ProcessCloud - add complete task directive (#4364)

* [ADF-4128] ProcessCloud - add complete task directive

* [ADF-4128]  ProcessCloud - fix completion functionality and add documentation

* [ADF-4128] ProcessCloud - PR changes

* [ADF-4128] ProcessCloud - lint

* [ADF-4148] ProcessServicesCloud - change layout

* [ADF-4128] fix PR changes

* [ADF-4128] - refractor complete task directive

* [ADF-4128] - fix lint

* [ADF-4128] - PR changes

* [ADF-4128] - replace isCompleted method  from service with model method

* [ADF-4128] fix unit tests

* [ADF-4128] - change travis yml

* [ADF-4128] - fix travis.yml

* [ADF-4128] - travis lint

docs/process-services-cloud/complete-task.directive.md

@@ -0,0 +1,26 @@
+---
+Title: Complete Cloud Task
+Added: v3.1.0
+Status: Experimental
+Last reviewed: 2019-02-28
+---
+
+# [Complete task directive](../../lib/process-services-cloud/src/lib/task/task-header/directives/complete-task.directive.ts "Defined in complete-task.directive.ts")
+
+Complete a task
+
+## Basic Usage
+
+```html
+<button adf-cloud-complete-task [appName]="appName" [taskId]="taskId" (success)="onTaskCompleted()">Complete</button>
+```
+## Class members
+
+### Properties
+
+| Name | Type | Default value | Description |
+| ---- | ---- | ------------- | ----------- |
+| taskId | `string` | empty |(Required) The id of the task. |
+| appName | `string` | empty | (Required) The name of the application. |
+| success | `EventEmitter<any>` | empty | Emitted when the task is completed. |
+| error | `EventEmitter<any>` | empty | Emitted when the task cannot be completed.  |