Fix look of Contact Page for partner First Name

Remove the "Is a company?" option in Partner's Contact Form as these are never companies

## Vanilla
![capture d ecran de 2014-11-05 17 42 04](https://cloud.githubusercontent.com/assets/1013356/4927639/57b6ae2e-653d-11e4-8402-4a1ecd04546f.png)
![capture d ecran de 2014-11-05 17 41 52](https://cloud.githubusercontent.com/assets/1013356/4927640/59281d56-653d-11e4-8744-6e9ce0084a52.png)
## Current implementation
![capture d ecran de 2014-11-05 17 41 29](https://cloud.githubusercontent.com/assets/1013356/4927646/5fea64a0-653d-11e4-9856-19c028d1241f.png)
![capture d ecran de 2014-11-05 17 41 15](https://cloud.githubusercontent.com/assets/1013356/4927647/6125e308-653d-11e4-8c6a-ca44d9af52aa.png)
## Fixed look
![capture d ecran de 2014-11-05 17 57 31](https://cloud.githubusercontent.com/assets/1013356/4927869/33777bcc-653f-11e4-967b-746bbb86b742.png)
![capture d ecran de 2014-11-05 17 57 43](https://cloud.githubusercontent.com/assets/1013356/4927867/3245f5ee-653f-11e4-8e55-49fa5f37d0ee.png)


That's true, I guess... but I don't really see why that would block the PR.
Both methods do the same thing, this one just doesn't mess with the diff as much.
Can you explain why it is better to use your method? I'd be happy to change it is there is a good reason, otherwise, I don't see a point in changing it.