Thanks for the patch. Committed as r78252.

I don't worry about displaying the date as well - IIUC, the user index is available to coordinators, only, anyway.

Oops, I misgenerated my previous patch.  Attaching the correct version.

Small enhancement: currently the code shows a '*' on the issue page. The attached patch also shows the '*' on the user index page.  Possibly controversial: the tooltip includes the date the agreement was signed.

contrib form data is now stored as of r73543

Should these be editable by Users themselves, Developers (their profiles or
everyone's?), Coordinators or Admins (lowest privilege)?

Also, will we add the option to sign a CA digitally to the tracker? (We could
also show a link for doing that in user profiles when they haven't signed already).

Do you want to detect issues resolved as accepted/fixes that have patches larger
that xKB by someone that hasn't signed an CA?

User accounts should be extended to indicate that the user has signed a
contributor agreement, and what his committer ID is. For the latter, it might be
sensible to allow multiple values: for svn, several committer have used various
names over time (back to CVS days), and for mercurial, it might be necessary to
store mutiple email addresses.