wip: out of band inline images are starting to work

src/widgets/uploading-image.jsx

@@ -0,0 +1,20 @@
+// Image view with progress bar and a cancel button.
+import React from 'react';
+import { FormattedMessage } from 'react-intl';
+
+import FileProgress from './file-progress.jsx';
+
+export default class UploadingImage extends React.PureComponent {
+  constructor(props) {
+    super(props);
+  }
+
+  render() {
+    return (
+      <div className="inline-image">
+        <img src={this.props.src} />
+        <FileProgress progress={this.props.progress} onCancel={this.props.onCancelUpload} />
+      </div>
+    );
+  }
+};