[style] photo page updates
- link color contrast
- all dark background - seamless document
[style] [structure] new approach to laying out photos
- figure is now default container for article images
- styles for figcaptions
- style photo "essay"
- style for grid of two photos on 60em+
- for now, no more narrow/full/srcset-specific styles for images
[structure] [config] change `image_url` to `image-url` *breaking*
[style] consistent credits for borrowed code
[style] height limiter and width media queries fix
for more photo flexibility – even 3:2 images were pushing the limit
[edit] markup changes for `<figure>` elements in patterns
[style] padding fix for figcaptions
[style] margin fix for dubbel figures
[style] grid-2 padding for dubbel layout
[style] more .dubbel layout fixes
[style] [bug] fix max-height figures for all
[style] [bug] margin fix for .ancillary at 60em
[style] new narrow figure styles
[style] [structure] headings on page layouts
Merge pull request #18 from opattison/2014-11-07-page-design

Page design – resolves #8; resolves #17