CMFCategory: do not keep a category link to the original when moving a category

This extends the fix from 7f2e8eb2 to
the case where category is cut and pasted somewhere else ( in this case,
afterClone hooks are not called )

product/CMFCategory/Category.py

@@ -154,6 +154,12 @@ class Category(Folder):
                 meta_types.append(meta_type)
         return meta_types
 
+    def _postCopy(self, container, op=0):
+      # This method is a hook from CopySupport.
+      # When category is cloned or moved, we have to update the category membership to itself.
+      self.setCategoryMembership(self.getBaseCategoryId(), None)
+      return super(Category, self)._postCopy(container, op)
+
     security.declareProtected(Permissions.AccessContentsInformation,
                                                     'getLogicalPath')
     def getLogicalPath(self, item_method = 'getTitle'):

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Category_afterClone.py

-context.setCategoryMembership(context.getBaseCategoryId(), None)

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Category_afterClone.xml

-<?xml version="1.0"?>
-<ZopeData>
-  <record id="1" aka="AAAAAAAAAAE=">
-    <pickle>
-      <global name="PythonScript" module="Products.PythonScripts.PythonScript"/>
-    </pickle>
-    <pickle>
-      <dictionary>
-        <item>
-            <key> <string>Script_magic</string> </key>
-            <value> <int>3</int> </value>
-        </item>
-        <item>
-            <key> <string>_bind_names</string> </key>
-            <value>
-              <object>
-                <klass>
-                  <global name="NameAssignments" module="Shared.DC.Scripts.Bindings"/>
-                </klass>
-                <tuple/>
-                <state>
-                  <dictionary>
-                    <item>
-                        <key> <string>_asgns</string> </key>
-                        <value>
-                          <dictionary>
-                            <item>
-                                <key> <string>name_container</string> </key>
-                                <value> <string>container</string> </value>
-                            </item>
-                            <item>
-                                <key> <string>name_context</string> </key>
-                                <value> <string>context</string> </value>
-                            </item>
-                            <item>
-                                <key> <string>name_m_self</string> </key>
-                                <value> <string>script</string> </value>
-                            </item>
-                            <item>
-                                <key> <string>name_subpath</string> </key>
-                                <value> <string>traverse_subpath</string> </value>
-                            </item>
-                          </dictionary>
-                        </value>
-                    </item>
-                  </dictionary>
-                </state>
-              </object>
-            </value>
-        </item>
-        <item>
-            <key> <string>_params</string> </key>
-            <value> <string></string> </value>
-        </item>
-        <item>
-            <key> <string>id</string> </key>
-            <value> <string>Category_afterClone</string> </value>
-        </item>
-      </dictionary>
-    </pickle>
-  </record>
-</ZopeData>