[ADF-970] Create a new Empty list component for the datatable (#2045)

* Create a new empty list component
Share the component between attachment list and document list
Add unit test
Add basic documentation

* Use the adf empty list also in the process attachment component

* Fix unit test

* delete wrong file

ng2-components/ng2-alfresco-datatable/src/components/datatable/adf-empty-list.component.ts

@@ -0,0 +1,43 @@
+/*!
+ * @license
+ * Copyright 2016 Alfresco Software, Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Component, Input } from '@angular/core';
+
+@Component({
+    selector: 'adf-empty-list',
+    styleUrls: ['./adf-empty-list.component.css'],
+    templateUrl: './adf-empty-list.component.html'
+})
+export class AdfEmptyList {
+
+    @Input()
+    emptyListImageUrl: string = require('../../assets/images/empty_doc_lib.svg');
+
+    @Input()
+    emptyMsg: string = 'This list is empty';
+
+    @Input()
+    dragDropMsg: string = 'Drag and drop';
+
+    @Input()
+    additionalMsg: string = 'any files here to add';
+
+    constructor() {
+
+    }
+
+}