Improve "Available Balance" clarity

Overview

We’ve had some confusion about the available balance since we’ve subtracted the 2N “tolerance”.

While we work on a more complete solution, we should remove the 2N “tolerance”, and display the available balance like before.

Acceptance Criteria

• available balance = actual balance - minimum balance
• Remove “Use Max” from staking flow
• If user enters an amount > available balance - 0.1 N, they receive an error
  • /staking
  • /send-money

[heycorwin]

Alright gang, here is the latest iteration of the staking (and new send) flow. The key difference here is we would default to showing Available to Stake, and allow the user to expand the details of this figure below the Amount field, where we display the breakdown of Available Balance - Fee Reserve = Available to Stake. This creates an experience where users can always see the explicit amount available to stake, and if they are curious about how this figure is calculated, can view the breakdown for more details. This design leaves very little room for questions, save for what the user is actually being charged for the transaction (which we are currently unable to calculate).

In the future if necessary, we can add the actual txn/gas fee to the confirmation screen in an attempt to be even more transparent.

@vlad in response to pre-populating the field, I’m of the opinion that we don’t want to make any assumptions about the users intent regarding the amount they want to stake. The Use max feature makes it easy enough for them to stake all of what they have available, but still leaves the decision in their hands, rather than making any decisions for them.

Figma File: https://www.figma.com/file/wUZTfh90g2zQPIxxv69kRJ/Available-to-Stake?node-id=0%3A1 cc @Patrick1904

[Patrick1904]

@corwinharrell I think this looks good. The main thing still missing IMO is a way for the user to know what their actual ‘available balance’ is within this context, i.e. not having to calculate it. If the user decides to enter the amount manually.

Initially, I thought the ‘reserved for fees’ amount had been deducted from the ‘available balance’