Jahia already installed but installation process failed

Cf parent JIRA

As a normal user, I modified my MySQL setting, restarted the service, kill Jahia and restarted the installation.bat installer (without unsinstallaing Jahia first - not trivial to know you should do it!).

I am now redirecting to the home page of the config wizard which is asking me to access to my Jahia through /cms. There is even an automated redirect after 5 seconds which finally redirect me to the same config page!

So could'not we ensure that the installation is correctly finished (I do not kow a check in the DB that the first home page was at least accessed once or something like that we could ensure that the installation went successfully and did not failed somewhere in between?

And if the installation failed, perhaps we should indicate that this would be better to fully reinstall Jahia.

Finally the whole install wizard is still doable? So is this only a warning or is this a blocking error? Could I redo the config wizard a second time.

Clearly spaking this is not clear at all for the end-users (or at least myself) what I should do right now with my "semi-installed Jahia environment"... Should I redo the config wizard? Should I reinstall everything and clean-up my perhaps now corrupted mysql db?