- Move baseargparser out of deluge/ui since it is also used by the
Daemon and could cause packaging issues if UI code is not available.
- Renamed baseargparser to argparserbase to follow existing Deluge
naming.
- Renamed get_version to distinguish from deluge.common.get_version.
- Translation code is usable by more than just the UIs so also move it
to Deluge namespace and re-use i18n directory and make it a package.
- Renamed setup_translations to singular as it felt more correct.
- Renamed set_dummy_trans to be more descriptive.
Closes: #3081