Add error messaging for x509 commit signing problems
Currently if an x509 certificate used to sign a commit is in some way deficient, such as missing crlDistributionPoints
or the like, then no error is raised and instead there's just a rather cryptically missing Verified
/Unverified
badge.
If there is an issue with the certificate we should most likely generate a log message, and also consider an Error
badge with details of the error in place of the Verified
/Unverified
badge.
Related #295297 (closed)
Related #293697 (closed)