feat(blog): Upgrade server, site, and design fixes

.stylish-haskell.yaml

app/server.hs

app/site.hs

blog.cabal

css/app.css

images/markdown-mark.svg

posts/2014-01-20-linux-setup-gnome-3.md

posts/2014-03-08-php-is-not-dead.md

posts/2014-06-07-ensurejs.md

posts/2014-08-12-ensure-04-records.md

posts/2014-10-27-custom-laravel-logs.md

posts/2014-11-08-ensurejs-documentation-shields.md

posts/2015-05-10-heapster-deis.md

scss/_headers.scss

scss/app.scss

stack.yaml

templates/full-post.html