fix(styleguide): fixes #337 #338 #339; builds from LESS files

Went ahead and fixed the other two issues because they were small enough to tackle in one PR. 

I also updated the task to build from the LESS files. This introduces an error with the top nav bar, but I'll open another issue to address that. 
![common___encoreui_and_desktop](https://cloud.githubusercontent.com/assets/33945/3292977/8d73c1ae-f595-11e3-9f22-436e310601f1.jpg)
Attached a screenshot of current adaptation. When adapting on /build/dist/*.css it shows a more complete iframe example.