Namadillo: Claim & Stake proposed changes

[jurevans]

Currently, in the Claim & Claim+Stake flows, there's no way to specify which rewards you wish to claim/stake. This presents a problem if, for example, the user is signing with a Ledger HW Wallet, as these cannot be batched, meaning the user must sequentially sign x number of transactions on the device, which could take a long time. Also, there may be rewards that the user doesn't want to claim, because they may not be high enough to justify the gas costs.

A proposed solution is to give the user the option to choose which rewards they want to claim or claim & stake. This will need some design input from @ChrisHoltDesign. Perhaps this could be an option that defaults to "Claim all", with the option of filtering any rewards they do not wish to claim.

Also, it was noted that we currently accept these transactions in a random order, which is not ideal for reviewing on the Ledger. We should better control which order these will be signed in, perhaps sorting by amount, so long as it's consistent.