worklist delete records protected from back-button & resubmission; bugfix to C::ReferralSource::lookup() - only attempts to load 'skip_wrapper' flag if present
new admin function to register new user from email application; moved C:::User::_generate_new_password() to C::Roles::User for sharing with C::Admin::User::new_user()
patched date validation to allow date fields day, month & year to carry prefix (dob_* or request_*); patched .t and .tt to submit correct param (eg dob_day instead of day)
