Trying to pay all funds results into VM error

[dit7ya]

Steps to reproduce

1. Mint some tokens/ have some tokens
2. Enter that amount in a Create Payment action

Expected behavior

It should not let you take that action, given that the network counting the network fee, it exceeds the total available funds.

Actual behavior

Payment action is allowed but fails with VM error.

Suggestions

This is introduced as a side-effect of #3275. The available funds check needs to incorporate the network fees too.
Also related, maybe there can be a view (tooltip on hover on a info icon) that shows the total amount to be spent including fees. This needs to be checked with product, what do you think @arrenv ?