config: updated to Jekyll 2.3.0.
CSS: added `overflow: hidden` to #_main_content.post.
Disabled Google +1 globally.
PRs: added `dev/2014-09-04-ludum-dare-30-postmortem-onomo.html`.

Post revisions:

* `dev/2014-09-04-ludum-dare-30-postmortem-onomo.html`:
	- dudum lare.