Added CXMLReader for all XML-reading operations

Added GetIntValueRange to force a value to be in a specific range

VocaluxeLib/Menu/CObjectInteractions.cs

@@ -5,8 +5,6 @@ using System.Drawing;
 using System.IO;
 using System.Text;
 using System.Windows.Forms;
-using System.Xml;
-using System.Xml.XPath;
 
 using Vocaluxe.Menu;
 using Vocaluxe.Menu.SingNotes;