Remove links on image credits with no creditlink
Merge pull request #18 from lvictorino/patch-1

Remove links on image credits with no creditlink
Merge branch 'master' of https://github.com/mmistakes/hpstr-jekyll-theme
Upgrade Google analytics to Google universal analytics

Google will deprecate old ga.js. Change to new analytics.js, and also
use the new version of the enhanced link attribution module.