Fixes some window sizes

Fixes the manifest having a horizontal scroll bar, which it shouldn't.
Fixes the new player setup window having a vertical scroll bar.
Fixes manifest not using <p> and </p> instead of double breaks on the new player options.

Kinda new to this UI stuff, sorry.

![ss 2014-12-28 at 04 22 41](https://cloud.githubusercontent.com/assets/7247232/5563827/7ab21316-8e49-11e4-8912-ee25417ac5d3.png)