Display authorization time

[Viktor Szépe]

It seems to be possible to query the authorization validity period:

manuale/manuale/authorize.py

Line 31 in 29c18a4

 logger.info("{} is already authorized until {}.".format(domain, auth.get('expires', '(unknown)'))) 

It would be nice to have a new command for it.

[Viktor Szépe]

Turns out manuale authorize is showing it.

[Viktor Szépe]

Closed by dd4ffb4