Fixed unwanted spacing between nested rows

I've got some nested rows as described on the [setup guide](http://www.amazium.co.uk/setup.html), however there seems to be some extra spacing between each of the rows.

An example of the issue can be found here: http://jsfiddle.net/s6LbkLfw/1/embedded/result/

The issue seems to be caused by white space between the `div` elements when they have `display: inline-block;` on the nested `.row .row` class. Initially I thought to change the `display: inline-block;` to `float: left;`. But, unless I've missed something, I can't see any use for having `display: inline-block;` as each `.row` element is an entire row and shouldn't have anything beside it. So removing these from the `.row .row` class solves the issue and I haven't experienced any drawbacks.

This [Stack Overflow](http://stackoverflow.com/questions/11805352/floatleft-vs-displayinline-vs-displayinline-block-vs-displaytable-cell) discussion helped solve the issue.