added some more default displays

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@19565 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/Image.py

@@ -51,7 +51,9 @@ from OFS.content_types import guess_content_type
 from zLOG import LOG
 
 # XXX This should be move to preferences
-defaultdisplays = {'thumbnail' : (128,128),
+defaultdisplays = {'nano'      : (25,25),
+                   'micro'     : (64,64),
+                   'thumbnail' : (128,128),
                    'xsmall'    : (200,200),
                    'small'     : (320,320),
                    'medium'    : (480,480),