Report to user if an LDAP error occurs
Catch LDAP errors and display them properly rather than
just dumping the exception.
Rename variable authed to authok.
Add test for case where LDAP server is not started to
confirm the user receives the error alert.
https://fedorahosted.org/ipsilon/ticket/55
Signed-off-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-by: Patrick Uiterwijk <puiterwijk@redhat.com>