Changeset 428

Canvass was converting e-mail addresses to lower case
when it saved User details for some reason. This meant
that any Hub user with a mixed-case e-mail address would
be able to access one page from Canvass, then nothing
else; Canvass would fail to find a matching local user
with their Hub-based mixed case address, create a new
user, save it and in saving convert the address to
lower case and thus encounter an exception as a local
user would already exist with the lower case version of
the mixed case address.

Very simple fix; verified by checking access to Canvass
on the ROOL site using a mixed case e-mail address in a
Hub account.