Interface to convert member list to membership numbers

[adehnert]

For the membership confirmation, we ask for things like number of undergrads, number of grad students, etc.. We should have a form where people can enter their membership list (as usernames and/or emails). It should automatically look up in LDAP[*] or our DCM or something the student status of all MIT usernames on the list, and gives you back your membership list, sorted by category with associated counts. It's really stupid that we have various group leaders poking us for help on how to do this...