In order to do what is suggested in http://askubuntu.com/a/163683 the repositories have to actually work but I get a 404 when trying to install from them
When are the Backports PPA for TexLive back online again?
You are apparently running Ubuntu 13.04 (Raring).
The TexLive Backports PPA is intended to be used by Ubuntu 12.04 users as it contains backported TexLive packages from Ubuntu 12.10 to 12.04.
The packages you want can be installed without adding any PPA.