Option to freely customise _pk_id cookie expiration time

[gonerator]

Currently cookie expiration time can be chosen from a list giving values like 1 month, 6 months, 12 months etc - predefined ones.

I would for example like to set 3 months. I will use a custom code for now, but it would be great if it could be done freely and precisely from the UI

Cheers!

[sararekowska]

Thanks for the feedback! I passed it to our team