piwik/piwik — pull request #6132 by Guite (2014-09-05 09:54:47+00:00)
Title: Allow opt-out to be shown within an iframe on other domains

In Piwik 2.6.1 the opt-out iframes are not shown anymore, because the X-Frame-Options block them when used on another domain.
This PR fixes this problem and probably #6128 also.