hotfix chinese locales

Author: tanyaparker

dashboard/config/locales.yml

@@ -293,13 +293,12 @@
   native: "Tiếng Việt"
   debug: true
 
-"zh": "zh-TW"
 "zh-TW":
   english: "Chinese (Traditional)"
   native: "繁體字"
   webfonts: false
 
-"cn":
+"zh-CN":
   english: "Chinese (Simplified)"
   native: "简体字"
   webfonts: false