basis.date: fix timezone designator converting to minutes
basis.date: fix timezone designator converting to minutes

smelukov/basisjs,smelukov/basisjs,fateevv/basisjs,fateevv/basisjs,tyanas/basisjs,basisjs/basisjs,tyanas/basisjs,istrel/basisjs,smelukov/basisjs,fateevv/basisjs,basisjs/basisjs,basisjs/basisjs,istrel/basisjs,tyanas/basisjs,istrel/basisjs