fix position of pause icon

Before
![pause-icon-before](https://cloud.githubusercontent.com/assets/245432/3698910/fbf02520-13ca-11e4-8f3d-b121382d922b.png)
After
![pause-icon-after](https://cloud.githubusercontent.com/assets/245432/3698912/fd439c4a-13ca-11e4-9fa7-8d72509f679b.png)

Needs backport to stable7 cc @owncloud/designers @karlitschek