slapos_rss_style: Update get legacy messages

  Clean up and update script to reflect the current usage
   Use Object rather newTempBase, so listbox columns are simpler to read

master/bt5/slapos_rss_style/SkinTemplateItem/portal_skins/slapos_rss_style/WebSection_getLegacyMessageList.py

-web_site = context.getWebSiteValue()
-portal = context.getPortalObject()
+from Products.PythonScripts.standard import Object
 from DateTime import DateTime
+from hashlib import md5
 
+portal = context.getPortalObject()
+web_site = None
 url = None
 
-if web_site is not None:
+if context.getPortalType() in ["Web Site", "Web Section"]:
+  web_site = context.getWebSiteValue()
+  if web_site is not None:
     url = web_site.getLayoutProperty("configuration_slapos_master_web_url", default=None)
 
 if url is not None and url != portal.absolute_url():
   description = "Please replace the url %s by %s on this feed url" % (portal.absolute_url(), url)
 else:
-  url = portal.absolute_url()
-  description = "This RSS is disabled."
+  url = context.REQUEST.get('URL', context.absolute_url())
+  description = """
+This RSS feed is disabled:
+
+  %s?...
+
+Please remove it from your RSS reader, and use the global feed instead in order to get updates.
+""" % url
 
-from Products.ERP5Type.Document import newTempBase
+# Use date to ensure it changes every day.
+date_id = DateTime().strftime("%Y%m%d")
 
-return [
-       newTempBase(context, 'please_migrate', **{"title": "This RSS is disabled.",
-                          "url_string": "%s?%s" % (url, DateTime().strftime("%Y%m%d")),
-                          "modification_date": DateTime().earliestTime(),
-                          "description": description})]
+return [Object(**{
+          'title': "This RSS is disabled (%s)" % date_id,
+          'category': 'Disabled',
+          'author': 'Administrator',
+          'link': "%s?date=%s" % (url, date_id),
+          'pubDate': DateTime().earliestTime(),
+          'guid': md5("%s-%s" % (url, date_id)).hexdigest(),
+          'description': description,
+          'thumbnail': ( None)})
+        ]

master/bt5/slapos_rss_style/SkinTemplateItem/portal_skins/slapos_rss_style/WebSection_viewLegacyAsRSS/listbox.xml

@@ -10,6 +10,7 @@
             <key> <string>delegated_list</string> </key>
             <value>
               <list>
+                <string>all_columns</string>
                 <string>columns</string>
                 <string>count_method</string>
                 <string>default_params</string>
@@ -114,6 +115,12 @@
             <key> <string>values</string> </key>
             <value>
               <dictionary>
+                <item>
+                    <key> <string>all_columns</string> </key>
+                    <value>
+                      <list/>
+                    </value>
+                </item>
                 <item>
                     <key> <string>columns</string> </key>
                     <value>
@@ -123,16 +130,28 @@
                           <string>Title</string>
                         </tuple>
                         <tuple>
-                          <string>modification_date</string>
+                          <string>guid</string>
+                          <string>guid</string>
+                        </tuple>
+                        <tuple>
+                          <string>pubDate</string>
                           <string>pubDate</string>
                         </tuple>
                         <tuple>
                           <string>description</string>
-                          <string>Description</string>
+                          <string>description</string>
                         </tuple>
                         <tuple>
-                          <string>url_string</string>
                           <string>link</string>
+                          <string>link</string>
+                        </tuple>
+                        <tuple>
+                          <string>author</string>
+                          <string>author</string>
+                        </tuple>
+                        <tuple>
+                          <string>thumbnail</string>
+                          <string>thumbnail</string>
                         </tuple>
                       </list>
                     </value>