contao/core — pull request #6667 by aschempp (2014-01-21 10:59:29+00:00)
Title: Preserve tags in styles (e.g. for inline SVG)

It is currently not possible to use inline code in the custom code section (e.g. http://www.karlhorky.com/2012/06/cross-browser-image-grayscale-with-css.html)