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/en.json

@@ -553,7 +553,8 @@
     "no_globe_spin_data": "No Globe Spin Data",
     "show_less": "Show Less",
     "show_more": "Show More",
-    "about_country": "About Country"
+    "about_country": "About Country",
+    "about_region": "About Region"
   },
   "auth": {
     "username": "Username",