Render audio and video file preview

Audio and video files are not downloaded, but the element src is
fetching the content directly from storage. Unfortunately, one cannot
skip forward, when the RS server doesn't support content ranges.

tests/integration/components/file-preview/component-test.js

@@ -6,10 +6,17 @@ moduleForComponent('file-preview', 'Integration | Component | file preview', {
 });
 
 test('it renders', function(assert) {
-  // Set any properties with this.set('myProperty', 'value');
-  // Handle any actions with this.on('myAction', function(val) { ... });
+  this.set('metaData', {
+    etag: "714148227",
+    isBinary: false,
+    isFolder: false,
+    name: "fra-pdx",
+    path: "trips/2018/06/19/fra-pdx",
+    size: 92086791,
+    type: "application/json"
+  });
 
-  this.render(hbs`{{file-preview}}`);
+  this.render(hbs`{{file-preview metaData=metaData}}`);
 
   assert.equal(this.$().text().trim(), '');
 });