message: change a SIGNER_SELECT_WALLET_QR wording
diff: "X_KEEPKEY": "KeepKey",
  "UNLOCK_WALLET": "Unlock your $wallet",
  "SIGNER_SELECT_WALLET": "Select an account from your Parity Signer",
  - "SIGNER_SELECT_WALLET_QR": "or scan a QR with address to add a new one",
  + "SIGNER_SELECT_WALLET_QR": "or scan a QR code with an address to use a new account",
  "SIGNER_SELECT_WALLET_LIST": "Use a recent account",
  "X_SAFE_T": "Safe-T mini ",
  "ADD_SAFE_T_SCAN": "Connect to Safe-T mini ",
  