Removal of ID elements from slingshot model objects.

Removal of unused page-type elements from page model objects.
IDs are no longer required at all for model object XML config, the ID is implied by the unique path to the document.
A few other minor improvements.

git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@9577 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

source/java/org/alfresco/repo/template/VersionHistoryNode.java

@@ -203,6 +203,7 @@ public class VersionHistoryNode extends BaseContentNode
     /**
      * @return The list of aspects applied to this node
      */
+    @Override
     public Set<QName> getAspects()
     {
         if (this.aspects == null)
@@ -218,6 +219,7 @@ public class VersionHistoryNode extends BaseContentNode
      * 
      * @return true if the node has the aspect false otherwise
      */
+    @Override
     public boolean hasAspect(String aspect)
     {
         if (this.aspects == null)
@@ -247,6 +249,7 @@ public class VersionHistoryNode extends BaseContentNode
     /**
      * @see org.alfresco.repo.template.TemplateProperties#getChildren()
      */
+    @Override
     public List<TemplateProperties> getChildren()
     {
         return null;