Improved Slovak translation
Improved Slovak translation

New Slovak translation for "plain" is used for example in Google Chrome.
I assume it was done professional translators therefore better term.

pstorch/cgeo,samueltardieu/cgeo,Huertix/cgeo,tobiasge/cgeo,brok85/cgeo,Bananeweizen/cgeo,SammysHP/cgeo,lewurm/cgeo,yummy222/cgeo,cgeo/cgeo,madankb/cgeo,ThibaultR/cgeo,ThibaultR/cgeo,samueltardieu/cgeo,tobiasge/cgeo,cgeo/cgeo,mucek4/cgeo,ThibaultR/cgeo,brok85/cgeo,marco-dev/c-geo-opensource,lewurm/cgeo,marco-dev/c-geo-opensource,superspindel/cgeo,S-Bartfast/cgeo,xiaoyanit/cgeo,mucek4/cgeo,madankb/cgeo,kumy/cgeo,S-Bartfast/cgeo,schwabe/cgeo,Bananeweizen/cgeo,superspindel/cgeo,schwabe/cgeo,pstorch/cgeo,pstorch/cgeo,KublaikhanGeek/cgeo,SammysHP/cgeo,Huertix/cgeo,marco-dev/c-geo-opensource,brok85/cgeo,Huertix/cgeo,kumy/cgeo,cgeo/cgeo,SammysHP/cgeo,lewurm/cgeo,mucek4/cgeo,rsudev/c-geo-opensource,auricgoldfinger/cgeo,matej116/cgeo,vishwakulkarni/cgeo,KublaikhanGeek/cgeo,kumy/cgeo,KublaikhanGeek/cgeo,vishwakulkarni/cgeo,auricgoldfinger/cgeo,yummy222/cgeo,rsudev/c-geo-opensource,matej116/cgeo,matej116/cgeo,tobiasge/cgeo,auricgoldfinger/cgeo,schwabe/cgeo,S-Bartfast/cgeo,samueltardieu/cgeo,xiaoyanit/cgeo,madankb/cgeo,yummy222/cgeo,vishwakulkarni/cgeo,cgeo/cgeo,superspindel/cgeo,schwabe/cgeo,rsudev/c-geo-opensource,Bananeweizen/cgeo,xiaoyanit/cgeo