Added HasWorkingDraft property - B2010-007

Don't allow a WorkingDraft to be created if one exists - B2010-007

PROMS/VEPROMS.CSLA.Library/Extension/FolderExt.cs

@@ -266,6 +266,19 @@ namespace VEPROMS.CSLA.Library
 		#endregion
 		public Color BackColor
 		{ get { return FolderConfig.Default_BkColor; } }
+		public bool HasWorkingDraft
+		{
+			get
+			{
+				if (FolderDocVersionCount > 0)
+				{
+					foreach (DocVersionInfo dvi in FolderDocVersions)
+						if (dvi.VersionType == 0)
+							return true;
+				}
+				return false;
+			}
+		}
 		#region Extension
 		partial class FolderInfoExtension : extensionBase
 		{