- Instead of using the web3provider to check individual token balances we fetch all balances at the start of the app
  - Adds balance and duplicate ID check for ERC721 transfers

* The link to the sample file was moved into the Help-Modal
* Instead there is a menu to generate transfers with the option to drain the safe

closes #171

* 100% test coverage of asset and collectible balance check

* the csvParser covers the max-line check
* test for the max-line check

* a boolean flag for duplicate transfers instead of transferAmount
* test for duplicate transfer detection