Implement edit multi signature profile

[eniolam1000752]

What was the problem?

This PR resolves #5354

How was it solved?

• Add ability to get multi signature profile on register multi signature flow
• Add unit tests

How was it tested?

• Register a multi-signature account
• Update the multi-signature account by navigating to the account menu and updating existing members
• The update transaction should be successfully signed and submitted to the network.

[ManuGowda]

Register multisignature transaction signing is not working as the signatures are placed in root instead of adding inside params during edit flow.

[ikem-legend]

Unable to register multisig account after all members sign and primary account confirms transaction

[ikem-legend]

Form values aren't retained between pages

[oskarleonard]

Why not just add transactionJSON here instead of ...rest so it is easy to see exactly what this function requires

[eniolam1000752]

reason was because I wanted to preserve the term transactionJSON through in the code snippet, defining it there would mean that I had to define a new variable name which I didn't want to do.

[oskarleonard]

Dont you think it is easier to understand the function just renaming in those cases?
transactionJSON: initialTransactionJSON

This way you see exactly what the function needs (gets help in editors etc...) as well as you know that this var is both modified and used in its initialState.

[ManuGowda]

As discussed, please handle the member signature show and hide based on signature progress.

[ikem-legend]

Unlike multisignature params signatures, signatures seems out of sync even after all transaction members have signed

[ManuGowda]

LGTM.

Tested

• Register multisig
• Update multisig
• Token transfer from multisig