[DOC] mail_sent/__openerp__.py, mail_archive/__openerp__.py: update summary

[REF] optimize format_message() in models.py
[DOC] update screenshots for description (make correct size)

mail_archives/__openerp__.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 {
     "name": "mail_archives",
-    "summary": """Create archive channel""",
+    "summary": """Adds menu to find old messages""",
     "category": "Discuss",
     "images": [],
     "version": "1.0.0",

mail_sent/__openerp__.py

@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 {
     "name": "Sentbox",
-    "summary": """Create sent channel""",
+    "summary": """Quick way to find sent messages""",
     "category": "Discuss",
     "images": [],
     "version": "1.0.3",

mail_sent/models.py

@@ -19,10 +19,11 @@ class MailMessage(models.Model):
     @api.multi
     def message_format(self):
         message_values = super(MailMessage, self).message_format()
-        for message in message_values:
-            for item in self:
-                if message['id'] == item.id:
-                    message['sent'] = item.sent
+        message_index = {message['id']: message for message in message_values}
+        for item in self:
+            msg = message_index.get(item.id)
+            if msg:
+                msg['sent'] = item.sent
         return message_values