* steve.alexander@canonical.com/launchpad--devel--0--patch-154 reorg of placeless auth code in preparation for it to me moved to c.l.webapp. Removal of most explicit use of SSHADigestEncryptor to use an IPasswordEncryptor utility instead.
* steve.alexander@canonical.com/launchpad--devel--0--patch-155 fix bad import in authorization.py. improve comments