Persistent notification: 1 modified file data/users/content.json (Sign & Publish)

### Step 1: Please describe your environment

* ZeroNet version: rev3844
* Operating system: W10
* Web browser: FF66

### Step 2: Describe the problem:

On a static .html page of my zite i see notification:

1 modified file
data/users/content.json (Sign & Publish)

I clicked the sign & publish button, it published to like 4 peers. But not disappeared. I clicked to update zeronet to latest rev (3844), and mentioned .html page still shows same notice after i refreshed it, and after i click its sign & publishing button it does not disappear, on page refresh it is still there. I think it is an error. It appeared also on other dynamic site even after i published content on it and on dynamic sites i think this pop-up is useless? (because i already signed and published using the button to submit my comment or such?

If you need any further details, let me know what i need to do. Thank you

首先，在使用 Sign & Publish 后，分别在静态 .html 页面和动态网站上重现持续显示的“1 modified file”通知，然后比较刷新前后的行为。完成标准是：该通知准确反映 data/users/content.json 是否仍需要发布，或者在发布完成后不再显示。

由索引模型根据 Issue 内容生成。