Improve UX of unencrypted messages / show unencrypted icon on message which are unencrypted

[anon43200645]

Unlocked padlock icon for unencrypted messages

Like encrypted messages are marked with a green/grey locked padlock, mark unencrypted messages with an unlocked padlock of a different color (red?) to emphasize it. Expected behavior Red open lock icon for unencrypted messages Actual behavior No padlock or other advices for unencrypted messages