Allow users to set preferred locale in settings and provide basic date and time localization support (#1226)

* Add basic date and time localization

* Normalize translations

* Localize transaction dates

* Removed unsupported Rails locales

db/migrate/20241001181256_add_locale_preference.rb

@@ -0,0 +1,5 @@
+class AddLocalePreference < ActiveRecord::Migration[7.2]
+  def change
+    add_column :families, :locale, :string, default: "en"
+  end
+end