Voucher Declaration finalization

After creating a voucher all the information on the final page should be

[ ] "Please wait while process. You will be required to sign twice using your wallet. Once for publishing the contract and once for minting your supply of vouchers." while publishing and signing. - with a greyed out - "Take me to my Voucher" This button will active when everything is ready.
[ ] Give a clear Error if there is not enough gas "Your amount of CELO is insufficient - please apply for a [subscription]." https://github.com/grassrootseconomics/sarafu.network/issues/23 - error message https://github.com/grassrootseconomics/sarafu.network/issues/22 - subscription service to gas gifter

grassrootseconomics / sarafu.network