Add support to big numbers in browser EVM

[filippsen]

Environment/Browser

Version 1.1.0

Description

browser EVM can't handle big numbers on the scale of 25e15 I expect the Browser network to be able to handle values in the range of 1e17

Steps to reproduce

very high value for payable transactions generates an error e.g. 200000000000000000

Expected result

Big numbers are expected to work.

Actual result

Uncaught Error: Number can only safely store up to 53 bits