Polish translation
Polish translation

Polish language file added
Still need UTF-8 support to work

kwketh/otclient,dreamsxin/otclient,Radseq/otclient,EvilHero90/otclient,Radseq/otclient,kwketh/otclient,Cavitt/otclient_mapgen,Cavitt/otclient_mapgen,gpedro/otclient,dreamsxin/otclient,gpedro/otclient,EvilHero90/otclient,gpedro/otclient,dreamsxin/otclient