Replaces paging toolbar and button images with high contrast versions

Before:
![screen shot 2014-12-01 at 11 23 13 am](https://cloud.githubusercontent.com/assets/186715/5251708/996058ac-794c-11e4-972a-75fd5e29e25d.png)

After:
![thing](https://cloud.githubusercontent.com/assets/186715/5251716/a248d8a4-794c-11e4-9198-e0e6f64077be.png)