[server] refactor server.utils.manager_userpasswd - remove passwd parameter which was never used - make the function usable when we have a login and want the user to enter a new password, with confirmation

#!/bin/sh

rm -f web/test/tmpdb*
rm -f web/tali18n.py

rm -f applications/*/test/tmpdb*
rm -f applications/*/tali18n.py
rm -f applications/*/i18n/*_full.po
rm -f applications/*/data/Schema.dot