Integrate notebook service with notebook UI (#3143)

Port notebookView code over to notebook.component.ts.
Integrate loading of notebook contents into the UI

src/sql/parts/notebook/models/modelInterfaces.ts

@@ -234,6 +234,10 @@ export interface IKernelPreference {
 }
 
 export interface INotebookModel {
+	/**
+	 * Cell List for this model
+	 */
+	readonly cells: ReadonlyArray<ICellModel>;
 	/**
 	 * Client Session in the notebook, used for sending requests to the notebook service
 	 */