Feature/bdc create (#4012)

* initial checkin

* rename

* wizard pages

* target cluster radio button group

* resource strings

* existing cluster picker

* revert changes to unwanted file

* revert unwanted changes-2

* update cluster icon

* settings page

* fix group container

* hyperlink component

* address review comments

* comments part 2

extensions/big-data-cluster/src/wizards/wizardPageBase.ts

@@ -0,0 +1,30 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+'use strict';
+
+import * as sqlops from 'sqlops';
+import { WizardBase } from './wizardBase';
+
+export abstract class WizardPageBase<T> {
+	private _page: sqlops.window.modelviewdialog.WizardPage;
+
+	public get page(): sqlops.window.modelviewdialog.WizardPage {
+		return this._page;
+	}
+
+	public get wizard(): WizardBase<T> {
+		return this._wizard;
+	}
+
+	constructor(title: string, description: string, protected model: T, private _wizard: WizardBase<T>) {
+		this._page = sqlops.window.modelviewdialog.createWizardPage(title);
+		this._page.description = description;
+		this._page.registerContent((view: sqlops.ModelView) => {
+			return this.initialize(view);
+		});
+	}
+
+	protected abstract initialize(view: sqlops.ModelView): Thenable<void>;
+}