UP-3717 - session timeout

I googled session timeout dialogs before I started on this work to get a feel for what other projects do.  I don't recall seeing any samples that included info about how long the session would be extended for if they choose to extend.

I can certainly add something to explain how long the new session should be active if the community thinks that would be valuable, but from what I have seen, I don't think users expect to see that.

Maybe the wording is bad?   Maybe just change it to "Yes, keep me signed in" would be better?