LP #1255561 Check username beginning with digit for login

LP #1255561 Check username beginning with digit for login

Currently, login authentication treats every username entry
that begins with a digit as a barcode. This patch runs through
that iteration, but if authentication fails, then tries a
username entry beginning with a digit as a username, instead of
a barcode, and retries the authentication as such, and returns
success if open-ils.auth matches the digit-beginning username
with the correct password.

Signed-off-by: Adam Bowling <abowling@emeralddata.net>