app-misc/khal: new ebuild (based on andy overlay)

Package-Manager: portage-2.2.7
Manifest-Sign-Key: 2F04E31F07201E7D!
app-misc/khal: added missing PYTHON_DEPS

Package-Manager: portage-2.2.7
Manifest-Sign-Key: 2F04E31F07201E7D!