fix mobile view

This fixes a regression introduced by https://github.com/diaspora/diaspora/pull/4354

**Before**
![before](https://f.cloud.github.com/assets/930064/940965/3a0e6628-0139-11e3-99ba-c967967e6d08.png)
**After**
![after](https://f.cloud.github.com/assets/930064/940964/383bc250-0139-11e3-9d96-6eb9a6cdeaa5.png)