proper date check
open graph meta tags
Merge commit '3072b3efd10eea45bea49308c47a8f32742b7810' into gh-pages

* commit '3072b3efd10eea45bea49308c47a8f32742b7810':
  open graph meta tags
  proper date check

Conflicts:
	src/cljs/joulukalenteri/core.cljs
new js