* refactored `daemon-stack.sh`
A new method was introduced to uniformaly start daemons and log output
accordingly. The methods for daemon start were renamed (plural ->
singular), therefore the adjustments in `start-mailserver.sh`.
* cleaned Fetchmail setup from `daemon-stack.sh`
Not sure why, but the Fetchmail setup was somehow happening in
`daemon-stack.sh` - this is not supposed to be the case. I relocated the
setup into `setup-stack.sh`, where it belong.
* delete old, unnecessary script in `target/bin/`
These are unused leftovers from the last commit, that relocated the
setup of Fetchmail into `setup.stack.sh`.
* corrected changedetector function name
* Apply suggestions from code review
* adjusted `debug-fetchmail` script
It is absolutely fine to source `setup-stack.sh` because sourcing the
script does not execute a single function (by desing of the script).
This way, we retain functionality.
* praise be ShellCheck
* added `log.sh` to `debug-fetchmail` as a dependency
* final cleanup
Co-authored-by: Brennan Kinney <5098581+polarathene@users.noreply.github.com>
Co-authored-by: Casper <casperklein@users.noreply.github.com>
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