LPS-44906 please read comments - Refactor permissions UI on different staging/export screens

Hey Brian,

This is part of the UI change I was sending you earlier this week. I've realized that I was using a wrong approach since I've tried to push different UI parts together for the same JSPs but they are not really tied together. Sorry about that. I'm sending these UI parts one by one to you, with the changes you have asked and I'll make the publish and export screen consistent and I'll update the different message keys as well when I get there.

Thanks,

Máté