First of all let me start by stating the fact that I am a bit noobish in servers and web services.
I have setup ownCloud both on a shared hosting and on a private server and what I would like is to add a iframe to the public download page.
I've editted ../apps/files_sharing/templates/public.php to add my iframe code for my facebook page, but it stays white and doesn't load.
Chrome console states the following:
Refused to frame '[FB LINK HERE]' because it violates the following Content Security Policy directive: "frame-src 'self'".