Previously keyboard input was no longer input after manually running
the integration tests. This change fixes this by restarting ibus after
the tests. However, we only want to do that if the ibus instance we
started for the tests got killed. The cleanup script might get called
multiple times, so we need this check.
This improves reliability if some processes are still running from a
previous run, which previously caused the tests to fail.
Also in the case of failed processes, list which ones are missing.
Some of the configuration files are useful for other distributions
as well. So this change moves them out of `debian/` to
`linux/keyman-config` so that they will be included in the source
tar ball.
Also remove zero-width space from one file.
Closes#8880.