Part of #9744
Removes all redundant `# -*- coding: utf-8 -*-` lines from files, as python 3 automatically reads source code as utf-8 now.
`Signed-off-by: Jonathan de Jong <jonathan@automatia.nl>`
* Don't use a virtualenv
* Generate the server's signing key to allow it to start
* Add signing key paths to CI configuration files
* Use a Python script to create the postgresql database
* Improve logging