No need to set modifiers in each iteration as it is the same each time

analytic_structure.py

@@ -326,6 +326,7 @@
                 )
                 view['fields'].update(elem_fields_def)
 
+                modifiers = json.loads(elem.attrib.get('modifiers', '{}'))
                 # Now we can insert the fields in the view's architecture.
                 for field in elem_fields:
                     attrs = {'name': field}
@@ -329,7 +330,6 @@
                 # Now we can insert the fields in the view's architecture.
                 for field in elem_fields:
                     attrs = {'name': field}
-                    modifiers = json.loads(elem.attrib.get('modifiers', '{}'))
                     attrs['modifiers'] = json.dumps({
                         attr: value for attr, value in modifiers.iteritems()
                         if attr != 'readonly' or