i18n: Three translation related paches

[ghost]

data: Mark release descriptions as untranslatable

GNOME automatically excludes release descriptions on Damned Lies (GNOME Translation Platform). It's a good practice to follow the GNOME way.

This can streamline the translation process, allowing translators to focus their efforts on more critical and user-facing aspects of the application.

po: Update POTFILES

• Add missing files
• Remove unused files
• Order entries alphabeticaly

po: Update the POT file

• Add missing strings
• Remove unused strings.