New Polish translations

modified:   pl_PL/README.md
modified:   pl_PL/ts/et.ts
modified:   pl_PL/ts/etresource.ts
modified:   pl_PL/ts/ettablestyle.ts
modified:   pl_PL/ts/kcomctl.ts
modified:   pl_PL/ts/kole.ts
modified:   pl_PL/ts/kso.ts
modified:   pl_PL/ts/wpp.ts
modified:   pl_PL/ts/wpp2doc.ts
modified:   pl_PL/ts/wppcore.ts
modified:   pl_PL/ts/wps.ts
modified:   pl_PL/ts/wpsgallery.ts
modified:   pl_PL/ts/wpsresource.ts