basis.entity: refactor entity instance work with indexes
basis.entity: refactor entity instance work with indexes

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