Step 11.6: Add private button, shown only to owner.

Task.jsx

@@ -34,6 +34,11 @@ Task = React.createClass({
           onClick={this.toggleChecked}
         />
 
+        { this.props.showPrivateButton ? (
+            <button className="toogle-private" onClick={this.togglePrivate}>
+              {this.props.task.private ? "Private" : "Public"}
+            </button>
+          ) : '' }
         <strong>{this.props.task.username}</strong>: <span className="text">{this.props.task.text}</span>
       </li>
     );