Made some improvements to the syncusers function

[alaphoid]

It will now better handle instances of the same username with different passwords found in XtraDB. Now displaying users as they are being created, otherwise it seemed like nothing happened without logging into ProxySQL to verify. Also moved the completion and how to connect message to the very end as it can go off the screen if --syncusers was used during setup and a lot of users needed to be created. And unrelated, replaced some tabs with spaces, trying to stick to the established format.

[CLAassistant]

All committers have signed the CLA.