* improved compatibility with TwentyFifteen theme (WordPress 4.1); one universal css to cover twentythirteen, twentyfourteen and twentyfifteen
* better css styling of gallery (gallery was not on exact center in content)
* release 1.2.1

git-svn-id: https://plugins.svn.wordpress.org/rajce-embed/trunk@1038828 b8457f37-d9ea-0310-8a92-e5e31aec5664