Hearthtale: Character Diary and Hardcore Epitaphs

Spanish interface

• Added Spanish for both esES and esMX clients: the journal window, Hall of the Fallen, welcome page, settings, tooltips, editing controls and chat messages.
• Both Spanish clients share the interface translation and keep their own localized race names in the Hall.
• The diary itself remains written in English, as with the French and German interfaces. Saved entries, player titles and notes keep their existing text.
• Added Spanish client checks and stricter validation of translated format arguments.