updated Bulgarian translation (thanks NEOhidra)
updated Czech translation (thanks rosiste)
updated Danish translation (thanks LoADrunner)
updated Dutch translation
updated Finnish translation (thanks ZZRX)
updated French translation (thanks frisson)
updated Galician translation (thanks xurxo)
updated Italian translation (thanks peppe_sr)
updated Korean translation (thanks timebandit)
updated Polish translation (thanks Okashu)
updated Romanian translation (thanks Galefury)
updated Swedish translation (thanks thedarer)
added Catalan translation (thanks cubic)
updated build script