Notification Comments: Nukes More Button

Closes #2651

@roundhill may i bother you with a review? (Thanks!).

New UI screenshot below!

![screen shot 2014-11-13 at 4 36 29 pm](https://cloud.githubusercontent.com/assets/1195260/5035129/866e3112-6b53-11e4-981f-d109a1675f32.png)

Here too.