[ADF-3039] Task List - Enanchement (#3404)

* * Created DataColumnSchemaAssembler component to get column schema from html and app.config.json
* Removed column related  method  from tasklist.

* * Removed data property from the tasklist component
* Using rows input property instead of data input property of the datatable

* *  Renamed  DataColumnSchemaAssembler to DataTableSchema
* Refactored DataTableSchema component

* * Changed schem property into an  input schemaColumns property  in dataTable component

* * Added selectFirstRow input property to select a first row of datatable
* Removed unnecessary method from tasklist component

* * Added test case for the recent changes
* Added mock object for the tasklist spec

* * Added testcases for recent changes in the datatable component

* * Updated datatable and tasklist document for the recent changes

* * Refactored process-service and task list component
* Updated datatable document.

* [ADF-3039] Task List - Enanchement
* Changed schemaColumn name to columns
* Updated datatable documentation.
*  data input Annotated  with @deprecated in the tasklist component

* * Added an sorting input to the datatable.
* Updated datatable and tasklist documentation
* Added method to get current sorting order.

* * After rebasing

* * Revert  sorting changes

* * After rebase

* * fixed conflicts

* * Fixed failing testcase after rebased.

demo-shell/src/app/components/process-service/process-service.component.ts

@@ -54,7 +54,6 @@ import {
 } from '@alfresco/adf-process-services';
 import { LogService } from '@alfresco/adf-core';
 import { AlfrescoApiService, UserPreferencesService } from '@alfresco/adf-core';
-import { ObjectDataRow } from '@alfresco/adf-core';
 import { Subscription } from 'rxjs/Subscription';
 import { /*CustomEditorComponent*/ CustomStencil01 } from './custom-editor/custom-editor.component';
 import { DemoFieldValidator } from './demo-field-validator';
@@ -164,7 +163,6 @@ export class ProcessServiceComponent implements AfterViewInit, OnDestroy, OnInit
                 private location: Location,
                 private preferenceService: UserPreferencesService) {
 
-
         this.defaultProcessName = this.appConfig.get<string>('adf-start-process.name');
         this.defaultProcessDefinitionName = this.appConfig.get<string>('adf-start-process.processDefinitionName');
 
@@ -446,11 +444,11 @@ export class ProcessServiceComponent implements AfterViewInit, OnDestroy, OnInit
         this.activeTab = this.tabs.tasks;
 
         const taskId = event.value.id;
-        const processTaskDataRow = new ObjectDataRow({
+        const processTaskDataRow: any = {
             id: taskId,
             name: event.value.name || 'No name',
             created: event.value.created
-        });
+        };
         this.activitifilter.selectFilter(null);
         if (this.taskList) {
             this.taskList.setCustomDataSource([processTaskDataRow]);