add some flexibility to resources listing and Lobo Layout

browser/concept_macros.pt

@@ -182,7 +182,7 @@
 <metal:resources define-macro="conceptresources">
     <div tal:attributes="class string:content-$level;
                          ondblclick python: item.openEditWindow('resources.html')"
-         tal:define="resources python: list(item.resources())"
+         tal:define="resources resources|python:list(item.resources())"
          tal:condition="resources">
       <h2 i18n:translate="">Resources</h2>
       <form method="post"

browser/lobo/standard.py

@@ -153,13 +153,15 @@ class Layout(Base, ConceptView):
     macroName = 'layout'
 
     def getParts(self):
-        result = []
         parts = (self.params.get('parts') or [''])[0].split(',')   # obsolete
         if not parts or not parts[0]:
             parts = (self.options('parts') or
                      self.typeOptions('parts') or
                      ['h1', 'g3'])
-        #ti = adapted(self.context.conceptType).typeInterface
+        return self.getPartViews(parts)
+
+    def getPartViews(self, parts):
+        result = []
         for p in parts:
             viewName = 'lobo_' + p
             view = component.queryMultiAdapter((self.context, self.request),