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. 
I see what you're talking about. Seems like the styles all together aren't being loaded, not just the imported stuff. Might be related to this:
https://github.com/jacobrask/styledocco/pull/98

I'm going to do some digging into this to see if I can find the root cause.