While I do not agree with _every_ style change, this will force Dokku to have consistent formatting across all shell scripts, which is arguably a Good Thing™.
The command used to reprocess everything is:
```shell
shfmt -l -bn -ci -i 2 -w .
```
This can be useful in cases where a developer wishes to see what error messages are available for a failed deploy, but does not wish to spelunk around `docker ps -a` output.
Note that the logs are not made available once a further deploy is triggered, or after the containers have been garbage collected.
New version of the logs plugin broke compatibility (as reported in #1534).
So options have been added to handle display:
* -t/--tail to tail logs (already existed)
* -n/--num NUM to display only this number of lines
* -p/--ps PS to display logs only from provided process
* -q/--quiet to display raw logs without color, time and names
This should close#1534
