Pluralize Turkish (#967)

- Changes the pluralization category of Turkish.
- See: https://discuss.flarum.org/d/2937-pluralization-problems

js/lib/Translator.js

@@ -164,7 +164,6 @@ export default class Translator {
       case 'ko':
       case 'ms':
       case 'th':
-      case 'tr':
       case 'vi':
       case 'zh':
         return 0;
@@ -217,6 +216,7 @@ export default class Translator {
       case 'ta':
       case 'te':
       case 'tk':
+      case 'tr':
       case 'ur':
       case 'zu':
         return (number == 1) ? 0 : 1;