move show_id.py from CMFPlone to Archetypes

CHANGES.rst

@@ -14,9 +14,11 @@ New features:
   Make AnnotationStorage awareness of it optional.
   [jensens]
 
-- moved script ``date_components_support.py`` from CMFPlone over here, 
-  hence its only used here.
-  [jensens]
+- Moved scripts that are only used by Archetypes from CMFPlone
+  to Products.Archetypes:
+  - ``date_components_support.py``
+  - ``show_id.py``
+  [jensens, davisagli]
 
 Bug fixes:
 

Products/Archetypes/skins/archetypes/show_id.py

@@ -0,0 +1,14 @@
+## Script (Python) "show_id"
+##bind container=container
+##bind context=context
+##bind namespace=
+##bind script=script
+##bind subpath=traverse_subpath
+##parameters=
+##title=Determine whether to show an id in an edit form
+
+if context.plone_utils.isIDAutoGenerated(context.REQUEST.get('id', None) \
+        or context.getId()):
+    return not (context.portal_factory.isTemporary(context)
+                or context.CreationDate() == context.ModificationDate())
+return 1