backend: Log updates on unknown xpubs
add more explanatory texts
deriveChildNode: Fix for IE11
trezorService: Fix id/serialNumber split in trezord transport
firmware: Fix firmware update modal broken by new API
send: Always remember tx values, switch to in-memory storage
receive: Add button to verify address on TREZOR

Calls `GetAddress` with the `show_display` flag and compares the
returned address against the one generated with client-side CKD.

Future versions of TREZOR firmare will support displaying the address on
the device display, allowing user to visually check the address.
receive: Use loading icon for address verification
receive: Display error from address verification