Release 2.0.4 mainly for translations

This release is focused mainly on translation but we also fixed some problems:

• Fixed regression on starting --update that didn't honour updates filter
• Default view at first running is again Groups and All, added an option all_updates for Fedora packager into
  system settings (/et/dnfdragora/dnfdragora.yaml) to change this behaviour and show All the packages with To_update filter (see dnfdragora.yaml.example)
• try to avoid crash on exit from dnfdragora-update (https://bugzilla.redhat.com/show_bug.cgi?id=1839784
  and https://bugzilla.redhat.com/show_bug.cgi?id=1844707)