Update index.html, editor.js, editor.css, ua.lua

[DispersiaRoleplay]

Description

This PR updates 4 files in qb-core v2.0:

• html/index.html

  • Hide #editor-container by default (class="hidden"); open only on populateData.

• html/js/editor.js

  • Show editor on populateData.
  • Close via header Close button or ESC and send NUI closeEditor to release focus.
  • Wire Save Changes to NUI saveConfig for the current file.
  • Safer NUI response parsing (text → JSON with fallback).

• html/css/editor.css

  • .hidden { display: none !important; }
  • Better readability (white text), lighter card background (matches sidebar),
  • Wrap/line-clamp long JSON, no horizontal overflow.

• locales/ua.lua

  • Updated/added UA strings for the editor.

Why

• Editor UI showed on load (not hidden by default).
• Close/ESC did not release NUI focus.
• “Save Changes” was not wired to NUI.
• Dark-on-dark text and overflow in cards affected readability.

Checklist

• Tested locally on qb-core v2.0.
• Code/style fits project guidelines.
• Targets the correct branch (v2.0).