Update Korean Translations for Block Launcher 1.5.1

Update Korean Translations for Block Launcher 1.5.1.
1.5.1 업데이트로 추가된 내용을 추가하고 기존 내용을 조금 수정하였습니다.
Fixed Level.setTile()
Load scripts on a separate thread to prevent stack overflow errors
ModPE: implement texture downloading and overriding.
Color in chat messages: uses standard Minecraft color control codes.
Fix parsing errors in ModPE scripts not being reported
Disable ModPE texture overrides for now; fix safe mode texture override fail
Merge remote-tracking branch 'cheesy/master'
Added a Croatian translation by @QyMineAsap (Manual merge of #61)
Merge remote-tracking branch 'kmcpe/patch-2'
Fix translucent navigation bar unintentionally enabled on Android 4.4
Fix crashing on Gingerbread and Honeycomb by using the right version of DiskLRUCache
Jelly bean is 4.1 not 4.2
Added paranoid mode that disables the Java-JavaScript bridge.
This is a stopgap solution until a proper permission system for ModPE scripts can be setup.
Added support for overriding the display language of the app
Merge remote-tracking branch 'pemapmodder/patch-1'
Added Finnish translation by VasuZ
Fix crash on Rockchip devices, add language override option to the preferences page
Added support for custom blocks