Commit 725ba929

 tries to reload
certain admin-settable fields from the database into a LiveUser when
committing, but fails to convert the expiry date to a timestamp when
doing so.  This causes logins to fail for users who have an expiry
date set in the future.

Change-Id: I53e962a0f5bab56ab130e1945b251f70447e9411
Signed-off-by: Richard Mansfield <richard.mansfield@catalyst.net.nz>