Register function to hashchange event, not its result.

Simplify: control all by hashchange and just call it on load.

It allows to work on hashchanges on unsupported browsers.

Add another JSON getter.

Avoid having two same gid.

Anyway such calculation result in wrong addresses.

Thanks to this error in one transaction will not stop other one.

Note: For now it contains hardcoded data, dynamic ones like accounts.

It is required to calculate price of Payment Transaction.