proper headers. Split out some of the mail into testbed-logs,
testbed-ops, and testbed-approval. Added a library for including from
our perl scripts. Contains a couple of mail helper functions, but will
hopefully contain more as time goes by.

Fixed a bug in the web interface that was causing breakage for people
with multiple accounts. Mac and Jay have noticed this, when logging
out and trying to join or create a project under a new or different
name.