We no longer ask the user if he tries to install a keyboard that is
already installed with the same version. The only time we ask is for
downgrades.
A similar change is implemented in `km-package-install` where we
changed the logic to match `install_window.py`. We now silently
install the new version unless it's a downgrade in which case we
output a error message and exit. This change also introduces the
`--force` parameter which allows to install the downgrade. For
upgrades or re-installing the same version it will cause an
uninstall of the current version first.
- add rudimentary man page for keyman-system-service
- remove hashbang for bash completion files
- reword description for keyman-system-service
This fixes these lintian warnings:
keyman-system-service: description-is-pkg-name Keyman system service
keyman: bash-completion-with-hashbang /usr/bin/env bash
[usr/share/bash-completion/completions/km-config:1]
keyman-system-service: no-manual-page
[usr/libexec/keyman-system-service]
