replace TTF fonts with OTF fonts, remove sizing on headers

Headers before:

![screen shot 2014-10-06 at 10 00 23 am](https://cloud.githubusercontent.com/assets/908679/4529794/50f2b6e4-4d7a-11e4-9307-592b422b3dd0.png)

Headers after:

![screen shot 2014-10-06 at 10 00 08 am](https://cloud.githubusercontent.com/assets/908679/4529801/54ac19f6-4d7a-11e4-83bb-a38c8fe693a0.png)