erp5_content_translation: fix Translation form for new UI.

bt5/erp5_content_translation/SkinTemplateItem/portal_skins/erp5_content_translation/Base_getContentTranslationLanguageValueAndLabelList.py

 from Products.ERP5Type.Message import translateString
-language_column_list = [(i['id'], translateString(i['title']))
+language_column_list = [(i['id'], str(translateString(i['title'])))
                         for i in context.Localizer.get_languages_map()]
 language_column_list.sort()
 return language_column_list

bt5/erp5_content_translation/SkinTemplateItem/portal_skins/erp5_content_translation/Base_viewContentTranslation/matrixbox.xml

@@ -317,7 +317,7 @@
       <dictionary>
         <item>
             <key> <string>_text</string> </key>
-            <value> <string>python: here.Base_getContentTranslationPropertyValueAndLabelList(pretty=True)</string> </value>
+            <value> <string>python: here.Base_getContentTranslationPropertyValueAndLabelList()</string> </value>
         </item>
       </dictionary>
     </pickle>

bt5/erp5_content_translation/SkinTemplateItem/portal_skins/erp5_content_translation/Base_viewContentTranslation/matrixbox_message.xml

@@ -290,7 +290,7 @@
       <dictionary>
         <item>
             <key> <string>_text</string> </key>
-            <value> <string>cell</string> </value>
+            <value> <string>python: str(cell)</string> </value>
         </item>
       </dictionary>
     </pickle>