[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/data/object-datatable-adapter.ts

@@ -196,12 +196,11 @@ export class ObjectDataTableAdapter implements DataTableAdapter {
 // Simple implementation of the DataRow interface.
 export class ObjectDataRow implements DataRow {
 
-    isSelected: boolean = false;
-
-    constructor(private obj: any) {
+    constructor(private obj: any, public isSelected: boolean = false) {
         if (!obj) {
             throw new Error('Object source not found');
         }
+
     }
 
     getValue(key: string): any {