[WIP] Fix minor styling bugs

No issue

This is a result of an internal conversation about some bugs in 0.5.2 where some issues were discovered which require really small fixes. These fixes include:

- On Android, the PSM could be horizontally scrolled.
- Notifications on the setup and authentication screens where cut off at the top - [Screenshot](https://cloud.githubusercontent.com/assets/390392/4430393/ddb0e2f4-462c-11e4-9ba2-4a1742393232.png)
- The setup screen wasn't scrollable

Will rebase and rename before removing the [WIP] badge.