Add Fixed Large Fast XV, Fixed Medium Fast XI, and Fixed Medium Slow VII

![screen shot 2014-09-23 at 18 24 46](https://cloud.githubusercontent.com/assets/1001642/4376554/a27d6812-4346-11e4-9e0b-a8698cd6ff65.png)

![screen shot 2014-09-23 at 18 24 56](https://cloud.githubusercontent.com/assets/1001642/4376555/a555ef96-4346-11e4-8193-79511996eeeb.png)

![screen shot 2014-09-23 at 18 25 07](https://cloud.githubusercontent.com/assets/1001642/4376558/aa4e36e8-4346-11e4-9c0a-098e45b78675.png)

Also fixes a bug with col span in items, and a margin issue between Facia slices.