show thumbnail by default in timeline but open in browser when clicked. issue #73 and #16

src/pages/stream/stream.html

@@ -54,7 +54,7 @@
       <div *ngIf="post.raw">
         <div *ngFor="let r of post.raw">
           <div *ngIf="r.type == 'io.pnut.core.oembed'">
-            <img src="{{ r.value.url }}">
+            <ion-item><ion-thumbnail><img src="{{ r.value.thumbnail_url || r.value.url }}" (click)="showImage(r.value.url)"></ion-thumbnail></ion-item>
           </div>
         </div>
       </div>

src/pages/stream/stream.ts

@@ -303,6 +303,10 @@ export class StreamPage {
     newPostModal.present();
   }
 
+  showImage(url) {
+    window.open(url, '_system');
+  }
+
   presentToast(text) {
     let toast = this.toastCtrl.create({
       position: 'top',