Remove "Reconnect" from a revoked key and let user confirm before revoking an agent key. #194

Delivered

• Opening Revoke credential now shows a confirmation dialog before any credential is revoked.
• The dialog explains that access stops immediately and revocation cannot be undone.
• Revoked OAuth credentials no longer offer Reconnect.
• OAuth credentials that merely expired still offer Reconnect.
• Deployed to Conderis.

Commit: bebc8d7