Created attachment 37812 [details]
Proposed patch

Currently a hardcoded link pointing to https://admin.fedoraproject.org/updates/ is added to all update notes that have an update_id.  But not all repositories providing updateinfo.xml data and id's are the upstream fedora repositories.  

Ideally the fedora repos would provide the link themselves in a references entity, and I'll add a bz for them to do that, but in the meantime the following patch ensures the link only gets added to updates from the official fedora repo by checking that the 'from' matches 'updates@feodraproject.org'.

I've also moved this logic before parsing other references as this vendor-specific URL is likely the most important (and self) reference.