Update Slovak.lang
Update Slovak.lang

Synced with current english.lang (added missing translations and normalized some of existing)
modulexcite/Plugins,prate3k/Plugins-1,radlr/Plugins,SGCreations/Plugins,eveoh/Plugins,NomadeLampe/Plugins,ran-guin/Plugins,modulexcite/Plugins,SGCreations/Plugins,KRQW/Plugins,shamim8888/Plugins,etd-framework/datatables-plugins,cbondo/Plugins,cbondo/Plugins,shamim8888/Plugins,afelicioni/DataTables-Plugins,afelicioni/DataTables-Plugins,ran-guin/Plugins,husnixs/Plugins,husnixs/Plugins,shamim8888/Plugins,NomadeLampe/Plugins,afelicioni/DataTables-Plugins,NomadeLampe/Plugins,prate3k/Plugins-1,husnixs/Plugins,prate3k/Plugins-1,cbondo/Plugins,eveoh/Plugins,radlr/Plugins,radlr/Plugins,KRQW/Plugins,eveoh/Plugins,SGCreations/Plugins,ran-guin/Plugins,KRQW/Plugins,etd-framework/datatables-plugins,modulexcite/Plugins,etd-framework/datatables-plugins,ashishraikar/Plugins,ashishraikar/Plugins,ashishraikar/Plugins