Added Chinese translation, reordered locales alphabetically

Corrected zh_Hant label

front/src/locales.js

@@ -5,18 +5,6 @@ export default {
       "code": "ar",
       "label": "العربية"
     },
-    {
-      "code": "zh_Hant",
-      "label": "漢語"
-    },
-    {
-      "code": "en_US",
-      "label": "English (United-States)"
-    },
-    {
-      "code": "en_GB",
-      "label": "English (UK)"
-    },
     {
       "code": "ca",
       "label": "Català"
@@ -29,6 +17,14 @@ export default {
       "code": "de",
       "label": "Deutsch"
     },
+    {
+      "code": "en_GB",
+      "label": "English (UK)"
+    },
+    {
+      "code": "en_US",
+      "label": "English (United-States)"
+    },
     {
       "code": "eo",
       "label": "Esperanto"
@@ -100,6 +96,14 @@ export default {
     {
       "code": "ru",
       "label": "Русский"
+    },
+    {
+      "code": "zh_Hans",
+      "label": "中文(简体)"
+    },
+    {
+      "code": "zh_Hant",
+      "label": "中文(繁體)"
     }
   ]
 }