There's a few small issues left over from #15450:

* [Focusing](https://github.com/bitcoin/bitcoin/pull/15450#pullrequestreview-282297760) on the `Encrypt Wallet` dialog after clicking `Create Wallet`.
> ```cpp
> m_passphrase_dialog->setWindowModality(Qt::ApplicationModal); 
> m_passphrase_dialog->show();
> ```

* Wallet [name escaping issue](https://github.com/bitcoin/bitcoin/pull/15450#pullrequestreview-282297760):
> This is at least one inconsistency where if you create a wallet with a HTML escaped character in the name, i.e Alice & Bob, then the & will not be shown in some menus / dialogs.

* Nits from this [review](https://github.com/bitcoin/bitcoin/pull/15450#pullrequestreview-284450044). 
{
    assert(!m_wallet_controller);
    assert(wallet_controller);
    m_wallet_controller = wallet_controller;
    m_open_wallet_action->setEnabled(true);
    m_open_wallet_action->setMenu(m_open_wallet_menu);
    connect(wallet_controller, &WalletController::walletAdded, this, &BitcoinGUI::addWallet);
    connect(wallet_controller, &WalletController::walletRemoved, this, &BitcoinGUI::removeWallet);
    for (WalletModel* wallet_model : m_wallet_controller->getOpenWallets()) {
        addWallet(wallet_model);
    }
}
void BitcoinGUI::addWallet(WalletModel* walletModel)