crm,Formulator: fix handling of non breakable space unicode characters

This was not correct on python3

bt5/erp5_crm/SkinTemplateItem/portal_skins/erp5_crm/Ticket_getResourceItemList.py

@@ -38,6 +38,7 @@ getPreferredCategoryChildItemListMethodId.
 # - all resource child must be properly indented
 # It is much simpler if only "empty_category=False" case is handled.
 from Products.ERP5Type.Cache import CachingMethod
+from Products.ERP5Type.Utils import bytes2str
 from AccessControl import getSecurityManager
 from six.moves import range
 portal = context.getPortalObject()
@@ -58,7 +59,7 @@ if indent_category == indent_resource == compact == None:
 accessor_id = 'getCompactTranslatedTitle' if compact else 'getTranslatedTitle'
 
 def getResourceItemList():
-  INDENT = portal_preferences.getPreferredWhitespaceNumberForChildItemIndentation() * '\xc2\xa0' # UTF-8 Non-breaking space
+  INDENT = portal_preferences.getPreferredWhitespaceNumberForChildItemIndentation() * bytes2str(b'\xc2\xa0') # UTF-8 Non-breaking space
   RESOURCE_INDENT = INDENT if indent_resource else ''
   getResourceTitle = lambda resource, category, depth: RESOURCE_INDENT * depth + getattr(resource, accessor_id)()
   if indent_category:

product/Formulator/Widget.py

@@ -12,7 +12,7 @@ from six.moves.urllib.parse import urljoin
 from lxml import etree
 from lxml.etree import Element, SubElement
 from lxml.builder import ElementMaker
-from Products.ERP5Type.Utils import unicode2str, str2unicode
+from Products.ERP5Type.Utils import bytes2str, unicode2str, str2unicode
 import re
 import sys
 import six
@@ -1145,7 +1145,7 @@ class MultiItemsWidget(ItemsWidget):
       d[item_value] = item_text
     result = []
     for e in value:
-      result.append(d[e].replace('\xc2\xa0', ''))
+      result.append(d[e].replace(bytes2str(b'\xc2\xa0'), ''))
     return result
 
   def render_odg(self, field, value, as_string, ooo_builder, REQUEST,