If the key is still valid, don't generate it by click

[unkcpz]

No description provided.

[unkcpz]

This PR can go first before #6 .

[yakutovicha]

Why doing this? What if it is 6pm, and I am about to go home. The key is valid for 2 hours, and I want to keep AiiDA running for the night. What do I do?

[unkcpz]

Good point, I was thinking about it but forgot it during the implementation. Do you think it is okay that I use _parse_validity_time and only do this if the valid time is greater than let's say 23.5h? Just to avoid keep on click the update will run out of 5 times limitation per day.

[yakutovicha]

Maybe add a switch "Allow valid keys update" and enable it by default. Or, better add a confirmation dialog "Are you sure? The key is still valid."

[unkcpz]

dialog "Are you sure? The key is still valid."

Good idea, since this is not an urgent feature, I want to with some react magic as an experiment.