Misc. Bug fixes and Translation Improvments (#926)

* Fixes [BUG] Editing a location removes it from all the collections
Fixes #893

* Add new translations for Chinese and Ukrainian locales

- Updated zh.json to include new keys: "about_country", "about_region", "show_less", and "show_more".
- Registered Ukrainian locale in +layout.svelte and added it to the locales array.

* Update translation for 'back' in Dutch locale (#917)

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Co-authored-by: Sille Van Landschoot <979071+sillevl@users.noreply.github.com>

frontend/src/locales/ko.json

@@ -959,7 +959,11 @@
     "try_again": "다시 시도하십시오",
     "your_random_adventure_awaits": "당신의 임의의 모험이 기다리고 있습니다!",
     "cities_available": "이용 가능",
-    "destination_revealed": "목적지 공개!"
+    "destination_revealed": "목적지 공개!",
+    "about_country": "국가 소개",
+    "about_region": "지역정보",
+    "show_less": "간략히 표시",
+    "show_more": "더보기"
   },
   "lodging": {
     "apartment": "아파트",