Production Build without dev-server not working

When I commented out the ``fuse.dev()`` in the ``dist``-Task, the produced output is not working. My ``dist``-Task looks like this:

````javascript
Sparky.task('dist', ['prod-env', 'config'], () => {
// comment out to prevent dev server from running (left for the demo)
// fuse.dev();
return fuse.run();
});
````
The output in the ``index.html`` file in the ``dist`` directory which is produced is this one:

````html

Test

````

But in the ```` tag it has to be ``./28e01eb1-api.js`` with a dot (.) to work.

If i commented in the ``run.dev()`` command, it works. So there seems to be a difference if I start it from a file or with the ``run.dev()`` command.

---------

Also there is something left from the babel Plugin. In the ``fuse.js`` on line 6 there's still the ``BabelPlugin`` left. It seems to be unused.

从 issue 中显示的 dist 任务开始，比较省略 fuse.dev() 时生成的 dist/index.html 与 run.dev() 的行为。检查 fuse.js 第 6 行中剩余的 BabelPlugin 引用。完成意味着生产输出无需 dev server 即可工作，并且未使用的插件引用已得到处理。

由索引模型根据 Issue 内容生成。