configurator: use a simpler way to show configurator item dict

Base_viewDict does not produce valid html, showing the dict using showDict is enough

bt5/erp5_configurator/SkinTemplateItem/portal_skins/erp5_configurator/Base_viewConfiguratorFieldLibrary/my_view_mode_configuration_class_dict.xml

@@ -10,12 +10,10 @@
             <key> <string>delegated_list</string> </key>
             <value>
               <list>
+                <string>css_class</string>
                 <string>default</string>
                 <string>editable</string>
-                <string>extra</string>
-                <string>height</string>
                 <string>title</string>
-                <string>whitespace_preserve</string>
               </list>
             </value>
         </item>
@@ -67,10 +65,6 @@
                     <key> <string>editable</string> </key>
                     <value> <string></string> </value>
                 </item>
-                <item>
-                    <key> <string>extra</string> </key>
-                    <value> <string></string> </value>
-                </item>
                 <item>
                     <key> <string>field_id</string> </key>
                     <value> <string></string> </value>
@@ -79,10 +73,6 @@
                     <key> <string>form_id</string> </key>
                     <value> <string></string> </value>
                 </item>
-                <item>
-                    <key> <string>height</string> </key>
-                    <value> <string></string> </value>
-                </item>
                 <item>
                     <key> <string>target</string> </key>
                     <value> <string></string> </value>
@@ -91,10 +81,6 @@
                     <key> <string>title</string> </key>
                     <value> <string></string> </value>
                 </item>
-                <item>
-                    <key> <string>whitespace_preserve</string> </key>
-                    <value> <string></string> </value>
-                </item>
               </dictionary>
             </value>
         </item>
@@ -102,6 +88,10 @@
             <key> <string>values</string> </key>
             <value>
               <dictionary>
+                <item>
+                    <key> <string>css_class</string> </key>
+                    <value> <string>pre</string> </value>
+                </item>
                 <item>
                     <key> <string>default</string> </key>
                     <value> <string></string> </value>
@@ -110,10 +100,6 @@
                     <key> <string>editable</string> </key>
                     <value> <int>0</int> </value>
                 </item>
-                <item>
-                    <key> <string>extra</string> </key>
-                    <value> <string></string> </value>
-                </item>
                 <item>
                     <key> <string>field_id</string> </key>
                     <value> <string>my_editor_field</string> </value>
@@ -122,10 +108,6 @@
                     <key> <string>form_id</string> </key>
                     <value> <string>Base_viewFieldLibrary</string> </value>
                 </item>
-                <item>
-                    <key> <string>height</string> </key>
-                    <value> <int>10</int> </value>
-                </item>
                 <item>
                     <key> <string>target</string> </key>
                     <value> <string>Click to edit the target</string> </value>
@@ -134,10 +116,6 @@
                     <key> <string>title</string> </key>
                     <value> <string>Configuration __dict__</string> </value>
                 </item>
-                <item>
-                    <key> <string>whitespace_preserve</string> </key>
-                    <value> <int>0</int> </value>
-                </item>
               </dictionary>
             </value>
         </item>
@@ -152,7 +130,7 @@
       <dictionary>
         <item>
             <key> <string>_text</string> </key>
-            <value> <string>python: here.Base_viewDict()</string> </value>
+            <value> <string>python: modules[\'pprint\'].pformat(here.showDict())</string> </value>
         </item>
       </dictionary>
     </pickle>