docs(webpack): fix tests sourcemaps / clarify logo image download

closes #1399, 1395

public/docs/_examples/webpack/ts/config/webpack.test.js

@@ -1,6 +1,6 @@
 // #docregion
 module.exports = {
-  devtools: 'source-map',
+  devtool: 'inline-source-map',
 
   resolve: {
     extensions: ['', '.ts', '.js']

public/docs/ts/latest/guide/webpack.jade

@@ -420,6 +420,13 @@ code-example(format="").
   src/app/app.component.spec.ts`
 )
 
+
+p.
+  The <code>app.component.html</code> displays this downloadable Angular logo
+  <a href="https://raw.githubusercontent.com/angular/angular.io/master/public/resources/images/logos/angular2/angular.png" target="_blank">
+  <img src="https://raw.githubusercontent.com/angular/angular.io/master/public/resources/images/logos/angular2/angular.png" height="40px" title="download Angular logo"></a>.
+
+
 +makeTabs(
   `webpack/ts/src/vendor.ts,
   webpack/ts/src/polyfills.ts`,
@@ -427,11 +434,7 @@ code-example(format="").
   `src/vendor.ts,
   src/polyfills.ts`
 )
-
 :marked
-  The `app.component.html` displays the Angular logo image which we can download
-  from [here](https://raw.githubusercontent.com/angular/angular.io/master/public/resources/images/logos/angular2/angular.png).
-
   ### Highlights:
   
   * There are no &lt;script&gt; or &lt;link&gt; tags in the `index.html`.