added photos to most posts
change to blockquote style

Moving away from green highlight to a border-left and charcoal gray
color. The previous design clashed with the figure/caption green
backgrounds. This also prevented the blockquotes from visually breaking
when paired with a figure/caption.
downsizing figcaption fonts slightly (.75em)

helps with proportions on smaller screen views as well as visual
hierarchy on larger screen views
center images in figures

in case they are slightly smaller than the target size (ideally > 512
pixels)
Merge pull request #26 from opattison/photo-testing

content updates and style changes