[port 2.3-develop] Add missing translations in Magento_UI

[JeroenVanLeusden]

Port of #11440. @fooman Can you check this since you also processed original PR?

Description

Add missing translations in UI module taken from mage/validation.js file.

Fixed Issues (if relevant)

1. Untranslatable string "Please enter the same value again." #5956: Untranslatable string "Please enter the same value again."

Manual testing scenarios

1. Install dutch language pack.
2. Set locale of frontend to dutch.
3. Create new user on the storefront, Fill both password fields with a different value.
4. String should be translated.

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)