Here, we make it possible to add a "-nightly" suffix to the package
version. This suffix will find its way to the Docker image tags. Thus,
the nightly branch will have different image tags. This will resolve
some confusion, as image tags are currently identical in nightly and
master.
Xqueue was mostly broken in the previous releases. In this version, we
address the following issues:
- Proper initialisation by creating the right users
- Shift from 8040 to the more standard 8000 port
- Expose xqueue service on the internet for accessing its API
- Properly define the xqueue name ("openedx")
- Make sure that all logs go to the console
- Add convenient CLI for using the awkward Xqueue API
- Properly document how to use Xqueue
