Merge pull request #235 from erinspace/fbook_img

A second attempt at making the facebook image better
Add better anchor points for pop-open job descriptions when reached via anchor - closes #229
Merge pull request #236 from erinspace/jobs

Add better anchor points for pop-open job descriptions when reached via ...
Add elasticsearch case study, closes #237
add elasticsearch logo
Merge pull request #238 from erinspace/news

Add elasticsearch case study to news
add square COS logo as og:image for facebook posts