content_translation: fix pylint messages and enable coding style

bt5/erp5_content_translation/SkinTemplateItem/portal_skins/erp5_content_translation/Base_editContentTranslationMessage.py

 from Products.Formulator.Errors import FormValidationError
-from Products.CMFActivity.Errors import ActivityPendingError
 from Products.ERP5Type.Utils import convertToUpperCase
 
 request=container.REQUEST
@@ -26,7 +25,6 @@ if not silent_mode and not request.AUTHENTICATED_USER.has_permission('Modify por
 
 # Get the form
 form = getattr(context,form_id)
-edit_order = form.edit_order
 
 try:
   # Validate

bt5/erp5_content_translation/SkinTemplateItem/portal_skins/erp5_content_translation/Base_isContentTranslationEnabled.py

 try:
   return context.getTypeInfo().getContentTranslationDomainPropertyNameList() and True
-except:
+except Exception:
   # First time after cache is cleared, something is wrong and does not work.
   return False

bt5/erp5_content_translation/bt/skip_coding_style_test

-1
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