I am very 'sorry' to say that I have now found the solution myself. It seems that I did not dig deep enough. I am now using daemon-start-stop supported by most UNIX systems, and it's working as it should.
I followed a tutorial on the internet which can be found here: http://blog.scphillips.com/2013/07/getting-a-python-script-to-run-in-the-background-as-a-service-on-boot/
I hope this helps with a lot of other users having the same problem/searching for the same answer.
Thansk for reading.