Change the misleading phrasing on Barracks and Bedroom

[BeanSidhe]

Barracks list "Single bed" in requirements. Bedroom is the same, but even worse: "Sleeping in a private bedroom will improve Duplicants' Morale".

It's hard to not conclude that you need a whole room per dupe with a comfy bed in it, since that's what the game tells you to do. Everyone makes this mistake if they didn't know otherwise. Some people make the same mistake with cots, especially if they don't really know what barracks are in real life.

Suggestion: change the phrasing to "At least one bed" in requirements and "Sleeping in a bedroom on comfortable beds will improve Duplicants' Morale".