GUI: Translate invalid date format message, see #204

Remove unnecessary WIP & TODO comments

Remove WIP comment

Remove WIP comment

GUI: Exclude global_email.recipients from gui updates since it's a dict

GUI: Missing retention policy presets may fail gui updates

Reformat file with black

GUI: Fix possible error on malformatted / missing recipients key, see #205

GUI: Move task creation error messages to handler function, fixes #204

GUI: Fix email validation when no emails are given, #201

CLI: add repo_name getter, also add repo name to forget ops, see #203

CLI/GUI: Make sure we use short product name as default config file

SECURITY: init leaked possible user/password from repo_uri - NPF-00014

monitoring: Improve logging message

core: Fix housekeeping superseeds backup results