Add Korean support

Author: unknwon

README.md

@@ -51,7 +51,7 @@ The goal of this project is to make the easiest, fastest, and most painless way
 - Mail service
 - Administration panel
 - Supports MySQL, PostgreSQL, SQLite3 and [TiDB](https://github.com/pingcap/tidb) (experimental)
-- Multi-language support ([20 languages](https://crowdin.com/project/gogs))
+- Multi-language support ([21 languages](https://crowdin.com/project/gogs))
 
 ## System Requirements
 

README_ZH.md

@@ -32,7 +32,7 @@ Gogs 的目标是打造一个最简单、最快速和最轻松的方式搭建自
 - 支持邮件服务
 - 支持后台管理面板
 - 支持 MySQL、PostgreSQL、SQLite3 和 [TiDB](https://github.com/pingcap/tidb)（实验性支持） 数据库
-- 支持多语言本地化（[20 种语言]([more](https://crowdin.com/project/gogs))）
+- 支持多语言本地化（[21 种语言]([more](https://crowdin.com/project/gogs))）
 
 ## 系统要求
 

conf/app.ini

@@ -398,8 +398,8 @@ DEFAULT_INTERVAL = 8
 MAX_RESPONSE_ITEMS = 50
 
 [i18n]
-LANGS = en-US,zh-CN,zh-HK,zh-TW,de-DE,fr-FR,nl-NL,lv-LV,ru-RU,ja-JP,es-ES,pt-BR,pl-PL,bg-BG,it-IT,fi-FI,tr-TR,cs-CZ,sr-SP,sv-SE
-NAMES = English,简体中文,繁體中文（香港）,繁體中文（台湾）,Deutsch,Français,Nederlands,Latviešu,Русский,日本語,Español,Português do Brasil,Polski,български,Italiano,Suomalainen,Türkçe,čeština,Српски,Svenska
+LANGS = en-US,zh-CN,zh-HK,zh-TW,de-DE,fr-FR,nl-NL,lv-LV,ru-RU,ja-JP,es-ES,pt-BR,pl-PL,bg-BG,it-IT,fi-FI,tr-TR,cs-CZ,sr-SP,sv-SE,ko-KR
+NAMES = English,简体中文,繁體中文（香港）,繁體中文（台湾）,Deutsch,Français,Nederlands,Latviešu,Русский,日本語,Español,Português do Brasil,Polski,български,Italiano,Suomalainen,Türkçe,čeština,Српски,Svenska,한국어
 
 ; Used for datetimepicker
 [i18n.datelang]
@@ -423,6 +423,7 @@ tr-TR = tr
 cs-CZ = cs-CZ
 sr-SP = sr
 sv-SE = sv
+ko-KR = ko
 
 ; Extension mapping to highlight class
 ; e.g. .toml=ini