Not escaping feeds titles

[This feed](http://blog.finalterm.org/feeds/posts/default) has a link tag in its title, and we don't pass it to the anti-XSS function. Then, it leads to poor behaviour of the left sidebar with the list of feeds:

![freeder](https://cloud.githubusercontent.com/assets/3856586/4851646/855a3346-6074-11e4-85ef-89ff4976d75c.png)
