Show more: Remove border when items hidden

##  Before
![before](https://f.cloud.github.com/assets/74132/1972729/75b66612-834d-11e3-8b37-1c19848d46b0.jpg)

## After

![afte](https://f.cloud.github.com/assets/74132/1972731/778c5ca8-834d-11e3-874d-d69d4652b09c.jpg)