Fix view model editor layout (#1473)

* flex container should be as big as the parent container

* add example

src/sql/parts/modelComponents/modelEditor/modelViewEditor.ts

@@ -2,6 +2,8 @@
  *  Copyright (c) Microsoft Corporation. All rights reserved.
  *  Licensed under the Source EULA. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
+import 'vs/css!./modelViewEditor';
+
 import { Builder, $ } from 'vs/base/browser/builder';
 import { TPromise } from 'vs/base/common/winjs.base';
 import { ITelemetryService } from 'vs/platform/telemetry/common/telemetry';