do not set default image_format on preview. This mean that an image will be...

do not set default image_format on preview. This mean that an image will be previewed in the same format she has been uploaded.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@34355 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/bootstrap/erp5_core/SkinTemplateItem/portal_skins/erp5_core/Base_viewFieldLibrary/my_thumbnail.xml

@@ -262,7 +262,7 @@
                 </item>
                 <item>
                     <key> <string>image_format</string> </key>
-                    <value> <string>png</string> </value>
+                    <value> <string></string> </value>
                 </item>
                 <item>
                     <key> <string>image_resolution</string> </key>

product/ERP5/bootstrap/erp5_core/bt/revision

-1552
\ No newline at end of file
+1553
\ No newline at end of file