fixup! erp5_interface_post: add preview tab on Internet Message Post

bt5/erp5_interface_post/SkinTemplateItem/portal_skins/erp5_interface_post/Base_getFirstPartFromMultipartMessage.py

@@ -12,14 +12,6 @@ message = email.message_from_string(data)
 payload = message.get_payload()
 
 while isinstance(payload, list):
-  payload = payload[0].get_payload()
+  payload = payload[0].get_payload(decode=True)
 
-def escapeMessage(message):
-  """
-  An Internet Mail Message has a line length limit, and truncated lines
-  are added "=" at the end. Thus, other "=" in the payloads are escaped
-  to "=3D"
-  """
-  return message.replace('=\n', '').replace('=3D', '=')
-
-return escapeMessage(payload)
+return payload

bt5/erp5_interface_post/SkinTemplateItem/portal_skins/erp5_interface_post/InternetMessagePost_viewPreview/your_preview.xml

@@ -104,7 +104,7 @@
       <dictionary>
         <item>
             <key> <string>_text</string> </key>
-            <value> <string>python: here.Base_getFirstPartFromMultipartMessage(here.data)</string> </value>
+            <value> <string>python: here.Base_getFirstPartFromMultipartMessage(here.getData())</string> </value>
         </item>
       </dictionary>
     </pickle>