Bulk and/or quick edit content permissions

[justintadlock]

This is a feature requested by users every so often.

I've never even played around with bulk editing before, so I'll have to dig into this. The first step should probably be testing out quick editing. At least try to roll out quick editing in v.0.3.0.

If anyone's looking into this, keep in mind that content permissions (the roles checked) are saved as multiple meta values on a single meta key.

[nemchik]

Is this still being considered for addition? This would be very helpful!