`flexible showing image on edit field` AND `add zh-CN.js for plupload`

## flexible showing image on edit field

I have a setter like bellow, for constructing a image url. 

```
    public function setLogoAttribute($value)
    {
        if (strpos($value, 'http') !== 0)
        {
            $this->attributes['logo'] = getCdnDomain() . '/uploads/hobby_category/' . $value;
        }
    }
```

But on the edit field, I get this: 

![image](https://cloud.githubusercontent.com/assets/324764/5565673/2fdeba9e-8f41-11e4-82f0-6b66f17c3801.png)

Find out the html structure in Chrome Developer Tool is : 
![image](https://cloud.githubusercontent.com/assets/324764/5565687/56c940f2-8f41-11e4-8625-2c4154d010ad.png)

## add zh-CN.js for plupload

For fixing this 404 error: 

![image](https://cloud.githubusercontent.com/assets/324764/5565698/bed2a8e6-8f41-11e4-807d-e5102acf26f9.png)