Fixed Quick Edit bug, fixed quotes conflict bug

1. Quick edit bug: after using quick edit to update post, it would display like this
 
![01](https://cloud.githubusercontent.com/assets/3773015/4623930/e8f84e7a-5358-11e4-93e0-3f57a3c90e28.png)

2. quotes conflict bug: if the post link format is `<a href="link" title="title">title</a>`, it would display like `<a href="link" title="<span class="title">title</span>">tile</a>`