[NXCM-4895] Show reason why a repository was auto blocked

Signed-off-by: Alin Dreghiciu <adreghiciu@gmail.com>
Merge branch 'refs/heads/master' into auto-blocking-status
Merge branch 'refs/heads/master' into auto-blocking-status
Cleanup, tweak display of 'Repo unavailable' reason string
Merge pull request #707 from sonatype/auto-blocking-status

[NXCM-4895] Show reason why a repository was auto blocked