Refactoring page layout styling

[patdavid]

I've had this in my head for a while, and I just wanted to make a quick note of it here for posterity (or whenever I get a chance to fiddle with it).

1. I'd like to reformat article/blog styling to center the content in a single column on the page.
   Right now the pages all use the grid class column two-thirds to contain all of the page content. Ideally I'd like to use column full instead. This will require some re-work of the image margins, headings, lists, blockquotes and a couple of other things, but shouldn't be too hard to pull off.

2. Possibly re-visit characters-per-line and font sizing to slightly upsize everything?