Swipe left-right to switch a wallet

[stackingsaunter]

Let's add swiping left/right to change active wallet.

I think quicker changing wallet is more important for this action than send/receive, as there's no quick way to change a wallet, and user has big buttons for send/receive already.

Not to interfere with android's swipe from bezel gesture to go back, the swipe box could be filling whole empty space, except area close to basels (see screenshot). On iOS though it could be full area