[ADF-667] selection mode and row styles (#1914)

* selection mode and row styles

- single/multiple/none selection modes for DataTable component (and Document List)
- support for custom row styles (inline and classname values)
- fix karma config (material themes)
- readme updates
- package-lock.json files for NPM5 support
- updated DataTable demo to demonstrate selection modes and row styles

* remove package lock files

ng2-components/ng2-alfresco-datatable/src/components/datatable/datatable.component.spec.ts

@@ -26,7 +26,7 @@ import {
     DataColumn,
     DataSorting,
     ObjectDataTableAdapter,
-    ObjectDataColumn
+    ObjectDataColumn, ObjectDataRow
 } from './../../data/index';
 
 describe('DataTable', () => {