/// <summary>
/// Command for removing author from the selected author list
/// </summary>
public void RemoveAuthorExecute()
{
ViewAuthor author = SelectedCurrentAuthor;
SelectedAuthorList.Remove(author);
PossibleAuthorsList.Add(author);
}
/// <summary>
/// Command for adding author to the selected author list
/// </summary>
public void AddAuthorExecute()
{
ViewAuthor author = SelectedPossibleAuthor;
PossibleAuthorsList.Remove(author);
SelectedAuthorList.Add(author);
}