Make logging more suitable for log monitoring softwares

[LoicPoullain]

Issue

The util function displayServerURL and configuration errors print logs on several lines which are not suitable for logging software. It would be more readable to log information on a single line.

Solution and steps

• Mark displayServerURL as deprecated and use services.get(Logger).info(Listening on port ${port}...) in projects instead.
• Simplify config errors.

Checklist

• Add/update/check docs (code comments and docs/ folder).
• Add/update/check tests.
• Update/check the cli generators.