Human Readable Connection String

[eberlep]

When creating databases for customers, it can be quite cumbersome to extract all the neccessary information to send to the customer.

We already have such a mechanism, but in a technical format (jdbc/psql).

I suggest we add a new format that can be used to communicate the connection details to the customer, including the description of the database and the dbo user. Which means we probably also have to copy that dbo users credentials.