mailu/setup/flavors
Dimitri Huisman 17cea83301 Completely remove step 5 where you can set the replica count for docker-stack.
Add additional warning to ´experimental' notice in setup for stack.
Add a notice the shipped PostgreSQL is deprecated.
Make the external PostgreSQL database the default option.
Make 1.7 the default version (stable_version': '1.7', in docs\conf.py)
Update mergify.yml with 1.8 version
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compose Force setup-file download scheme to HTTPS
stack Completely remove step 5 where you can set the replica count for docker-stack.