Please add detail of a multi signature transaction

_From @imYao on August 21, 2016 15:23_

Why GUI wallet didn't offer a view of multi signature transactions? Very inhuman!
Each one of multi-signer need to know the detail of the multi-sig transaction to prevent cheating.

Such as:
- Transfer?
- Trade Oder?
- Modify the weights and thresholds?

Thanks for your job.

_Copied from original issue: cryptonomex/graphene-ui#867_

No file, test, or entry point is named. Start by locating the GUI wallet's multi-signature transaction view and reviewing how transfer, trade order, and authority-change transactions are represented. Done means each signer can inspect the transaction details before approving, with coverage for the listed transaction types.

Written by the indexing model from the issue text.