devpanel: don't shown attribute value if it's an empty string
devpanel: don't shown attribute value if it's an empty string

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