Fix issue #487 - custom chain id is stored as String instead of Integer
Fix issue #487 - custom chain id is stored as String instead of Integer

To reproduce, click "Add Custom Node"
enter:
Node Name: whatever
URL: https://api.myetherapi.com/rop (for example)
Custom: x
Supports EIP-155: X
Chain ID: 3

Send a transaction

Without this change the Raw Transaction will contain 'chainId:"3"' and the transaction will fail to send with "Insufficient funds for gas * price * value
With this change, Raw transaction will contain 'chainId:3' and the transaction will succeed

mcdee/etherwallet,ubiq/pyruswallet,mcdee/etherwallet,mcdee/etherwallet,ubiq/pyruswallet,ubiq/pyruswallet,kvhnuke/etherwallet,kvhnuke/etherwallet