[ADF-491] Task Attachment List Component (#1877)

* Create a new component Task Attachment List
Improve the datatable to get the rows to show

* The component name should follow the guide style
Move the Content calls in a different service file
Show the attach file inside the viewer

* Change method name

* Datatable should get the path and show the icon

* Improve attachment component

* Improve datatable documentation

* Remove console.log

ng2-components/ng2-alfresco-datatable/src/data/object-datatable-adapter.ts

@@ -111,9 +111,25 @@ export class ObjectDataTableAdapter implements DataTableAdapter {
             }
         }
 
+        if (col.type === 'image') {
+
+            if (col.key === 'icon') {
+
+                let icon = this.getImagePath(row.getValue('icon'));
+                if (icon) {
+                    return icon;
+                }
+                return this.getImagePath('ft_ic_miscellaneous.svg');
+            }
+        }
+
         return value;
     }
 
+    getImagePath(id: string): any {
+        return require('./../assets/images/' + id);
+    }
+
     getSorting(): DataSorting {
         return this._sorting;
     }