Add: Option to disable Retina in the WP Admin. Actually now disabled by default to avoid an issue with NextGen.
Add: Option to disable the loading of the PictureFill script.
Update: PictureFill, from 2.1.0 (2014-08-20) to 2.1.0 (2014-10-07).
Change: Flattr button doesn't pop anymore. I know, that was annoying ;)
Info: I am thinking of adding features through a pro version. I would love to know your thoughts. Please check this: https://wordpress.org/support/topic/what-about-a-pro-version

git-svn-id: https://plugins.svn.wordpress.org/wp-retina-2x/trunk@1004175 b8457f37-d9ea-0310-8a92-e5e31aec5664