Membership version 2.1 beta 2

Hi Gang

This one is up a little earlier than I wanted it to be as the WordPress gang decided to release WP3.2 on 4th July.

It has a few of the updates I wanted in this version (most of the ones requested early in the beta 1 forum thread), but a good few had to be postponed until beta 3 now (which will be out later in the week).

You need this version for running 3.2 as it has a couple of bug and css fixes in it.