Integrate Korean translation

CONTRIBUTORS.md

@@ -120,6 +120,7 @@ Contributors:
 - [Vladimir Babin](https://github.com/Chiliec)
 - [Yannick Ihmels](https://github.com/ihmels)
 - [Ybarc](https://github.com/ybarc)
+- [Yu Yongwoo](https://github.com/uyu423)
 - [Yuichi Murata](https://github.com/yuichi1004)
 
 There is also many people who have reported bugs or proposed awesome ideas.

ChangeLog

@@ -6,6 +6,7 @@ New features:
 * Added Markdown editor
 * Added letter avatar provider
 * Added pluggable Avatar providers
+* Added Korean translation
 
 Improvements:
 

app/Model/Config.php

@@ -90,7 +90,7 @@ class Config extends Setting
             'fi_FI' => 'Suomi',
             'sv_SE' => 'Svenska',
             'tr_TR' => 'Türkçe',
-			'ko_KR' => '한국어',
+            'ko_KR' => '한국어',
             'zh_CN' => '中文(简体)',
             'ja_JP' => '日本語',
             'th_TH' => 'ไทย',
@@ -130,6 +130,7 @@ class Config extends Setting
             'fi_FI' => 'fi',
             'sv_SE' => 'sv',
             'tr_TR' => 'tr',
+            'ko_KR' => 'ko',
             'zh_CN' => 'zh-cn',
             'ja_JP' => 'ja',
             'th_TH' => 'th',