Remove unneeded code from svgs. Update wordmark to monospaced version

Our wordmark has been bugging me from day one. I updated here so that it's monospaced (you'll notice that now the "A"s line up centered. I'm still stressed about the space between the "T"s and the "A"s but this version is better. Also, all files in dropbox have been updated to this version of the wordmark. Screenshots below:

Old:
![screen shot 2014-10-25 at 2 56 21 pm](https://cloud.githubusercontent.com/assets/919800/4780795/f6e81dfc-5c78-11e4-871e-dec76161f76f.png)

New:
![screen shot 2014-10-25 at 2 56 12 pm](https://cloud.githubusercontent.com/assets/919800/4780796/ff81bdec-5c78-11e4-9755-bc2bb444799a.png)