locales: maintain server translations and item names

[MikelCalvo]

Summary

• maintain localized server item names across all available item_names_<lang>.txt files
• improve Spanish server translations in share/locale/english/translate_es.lua
• repair mojibake / broken names and fill safe placeholders only when a reliable locale reference exists

Changes

• updated server item-name files for:
  • ae
  • cz
  • de
  • dk
  • es
  • fr
  • gr
  • hu
  • it
  • nl
  • pl
  • pt
  • ro
  • ru
  • tr
• updated:
  • share/locale/english/translate_es.lua
• fixed:
  • mojibake / broken locale strings
  • safe NoNAme placeholder entries where a good same-language reference was available
• kept the pass conservative:
  • no quest .quest translation changes
  • no broad wording/style rewrites
  • no speculative replacements when the reference was weak

Notes for Reviewers

• Spanish includes both item-name maintenance and translate_es.lua updates.
• Non-Spanish changes are limited to item_names_<lang>.txt.
• I intentionally left unresolved keyed-string cases like Unknown Button [%s] and the questscroll1._10_say mojibake entries out of scope unless a strong keyed reference was available.