Objects can prevent a player from getting out of bed

[jeremyshannon]

It was reported that a player with a full inventory can't get out of bed if objects are floating on top of it.
This can be worked around by logging out and back in, but it still would be nice to not trap the player like that.
We could overrride the space bar to add a "jump out of bed" function. Perhaps another option would be that if you try to take an object but your inventory is full, we could knock the object about a node away. That way the trapped player could just shove the objects aside and get up.