Updated the string manipulation texts to be prefixed, allowing for better context management if needed for things like "Effects", "System Effects". Added en translations to handle them on the English side. Updated the zh translations using merge:

`msgmerge --update locale/zh_CN/LC_MESSAGES/lang.p o locale/lang.pot`

service/settings.py

@@ -540,7 +540,7 @@ class LocaleSettings:
     _instance = None
 
     supported_langauges = {
-            "en_US": wx.LANGUAGE_ENGLISH,
+            "en_US": wx.LANGUAGE_ENGLISH_US,
             "zh_CN": wx.LANGUAGE_CHINESE_SIMPLIFIED,
             # todo: add the others that EVE supports
         }