remove the header totals

before:
![screenshot 2014-12-29 10 35 58](https://cloud.githubusercontent.com/assets/74699/5571460/807c0c2c-8f46-11e4-87f9-e9f2679981d1.png)
after:
![screenshot 2014-12-29 10 36 36](https://cloud.githubusercontent.com/assets/74699/5571467/9677d4f2-8f46-11e4-9d25-52ba8fb856b7.png)

I'm pretty sure that we were meant to replace the N/A with something else, but it's been a while and we haven't got anything there. I removed the N/A's and then installations was the only one there and that seemed kinda empty. 

So I'm not sure if this is an improvement, but it remove's the N/A and whole top bar until we have the time come up with something else.

r? @spasovski