show multiple nodes in ledger page

See #100, release log:

• 3a6d25f by @yegor256: #100 copies
• 14397b7 by @yegor256: #87 jslint works
• 9441c0a by @yegor256: #87 numbers
• 087c33f by @yegor256: #87 improvements
• 4594365 by @yegor256: #87 jshint

Released by Rultor 1.68.1, see build log