Fix bug in vesp_ListUnlinkedItems (getting item when only 1 proc in working draft) & added vesp_PurgeEnhancedDocVersionsAndChildren

Allow insert of HLS before/after
Enhanced: User interface for removing links of an enhanced document
Enhanced: CSLA interface to unlinking docversion & contents (returns contentlist of affected items)
Enhanced: Unlink DocVersion

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

@@ -246,7 +246,46 @@ namespace VEPROMS.CSLA.Library
 		}
 		public string SearchPath { get { return ""; } }
 		#endregion
-
+		#region UnlinkEnhancedDocVersion
+		// Unlink (clear) enhanced from source for this docversion.  Refresh all related cache items.
+		public void DoUnlinkEnhancedDocVersion()
+		{
+			try
+			{
+				// get source docversion id for refresh - used later (check for null, just in case):
+				int sdvid = DocVersionConfig != null && DocVersionConfig.MyEnhancedDocuments.Count > 0 ? DocVersionConfig.MyEnhancedDocuments[0].VersionID : -1;
+				using (ContentInfoList cil = ContentInfoList.DoEnhancedDocVersionUnlink(this.VersionID))
+				{
+					foreach (ContentInfo ci in cil)
+					{
+						using (Content c = ci.Get())
+						{
+							// first refresh configs because the ContentInfo.Refresh causes events to occur that refresh screen
+							// and if configs aren't done first, the screen refresh, if based on config data, will not be correct.
+							foreach (ItemInfo ii in ci.ContentItems) ii.RefreshConfig();
+							ContentInfo.Refresh(c);
+						}
+					}
+				}
+				// Refresh for this docversion
+				Refresh(DocVersion.Get(this.VersionID));
+				DocVersionConfigRefresh();
+				// Refresh the source document's cache 
+				if (sdvid > -1)
+				{
+					using (DocVersion dv = DocVersion.Get(sdvid))
+					{
+						Refresh(dv);
+						dv.MyDocVersionInfo.DocVersionConfigRefresh();
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				throw new DbCslaException("Error on DocVersionInfo:DoUnlinkEnhancedDocVersion", ex);
+			}
+		}
+		#endregion UnlinkEnhanced
 		#region DocVersion Config
 		[NonSerialized]
 		private DocVersionConfig _DocVersionConfig;