void CentralWidget::switchLanguage()
{
    QString str = changeLanguage->text();
    if (str.startsWith('E'))
    {
        appTranslator.load(":/translations/trad_es");
        changeLanguage->setText("Spanish");
    }
    else
    {
        appTranslator.load(":/translations/trad_en");
        changeLanguage->setText("English");
    }

    retranslateStrings();
}