feat(localization): expand language support and enhance UI for user settings

- Added support for additional UI locales including Cebuano and Spanish, improving accessibility for a broader user base.
- Updated language selection components in the AppHeader and SettingsWidget to reflect new language options, enhancing user experience.
- Enhanced localization of various UI elements across components, ensuring consistent language representation and improved user engagement.
- Implemented logic to synchronize user language preferences with backend settings, providing a seamless experience when changing languages.

frontend/src/i18n/locales/en/falukant.json

@@ -381,6 +381,10 @@
             "sale": {
                 "runningGuards": "Guards"
             },
+            "storage": {
+                "buyPartialError": "Error while buying part of the storage capacity.",
+                "sellError": "Error while selling storage capacity."
+            },
             "production": {
                 "title": "Production",
                 "info": "Details about production in the branch.",