Whats Next? 0.20.1 - Localization completion fix

- Localized Today/Tomorrow date headings.
- Localized calendar month and weekday names for Russian and Ukrainian.
- Localized Tank Assistant help text.
- Localized Equipment Loot shared-data help text.
- Localized About description and feature list.
- First-run language prompt now uses localization keys.
- Item-level track names remain unchanged.
