Paper wallet: Transfer tokens from PW.

[TruszczynskiA]

The user should be able to automatically transfer tokens stored in the paper wallet to his main wallet. The only thing that the user needs to do is to scan the paper wallet's QR code and confirm the action.

Definition of done:

• The user is able to start the tokens transfer process after he scans the QR code and confirms the action
• The current state of the process is visible on the home screen
• The user balance should be updated after the process ends with success