private void AddNewPointTypeButton_Click(object sender, RoutedEventArgs e)
{
DatabaseHandler.CreateNewPointType(NewPointTypeName.Text);
NewPointTypeName.Text = "";
TypeTable newType = DatabaseHandler.GetLatestPointType();
pointTypes.Add(newType);
newType.number = pointTypes.Count;
PointsTypeList.Items.Refresh();
updatePointTypesHandler.Invoke();
//TODO UPDATE MAIN PAGE AND ALL OPENED POINTS
}