* Add Dutch (nl) translations for UI and models
Added comprehensive Dutch translation files for models, views, mailers, and Doorkeeper, covering accounts, categories, admin, and more. Updated languages_helper.rb to include 'nl' as a supported language. Improved capitalization and consistency in existing Dutch date and number formats.
* ai sugestions
* nitpick fix
* Fix Dutch translations and improve consistency
Corrected minor issues and improved consistency in Dutch locale files, including fixing typos, updating terminology (e.g., 'Self-Hosting' to 'Zelfhosting', 'Provider selectie' to 'Providerselectie'), and ensuring proper formatting. No functional changes were made; this commit only affects translation files.
* Update Dutch translations for product name and pluralization
Replaced hardcoded product names with %{product_name} in password reset and API key views for improved reusability. Updated wallet setup message in CoinStats item model to support correct Dutch pluralization.
* Update nl.yml
