erp5_base: support JS interface in Coordinate_asURL

See merge request nexedi/erp5!1226

bt5/erp5_base/SkinTemplateItem/portal_skins/erp5_base/Coordinate_asURL.py

-if hasattr(context, 'asURL') : 
-  return context.asURL()
-return None
+if not hasattr(context, 'asURL'):
+  if url_dict:
+    # new JS interface needs dict
+    return {}
+  return None
+
+if url_dict:
+  return {
+    'command': 'raw',
+    'options': {
+      'url': context.asURL()
+    }
+  }
+return context.asURL()

bt5/erp5_base/SkinTemplateItem/portal_skins/erp5_base/Coordinate_asURL.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>brain, selection=None, selection_name=None, **kwd</string> </value>
+            <value> <string>brain, url_dict=False, selection=None, selection_name=None, **kwd</string> </value>
         </item>
         <item>
             <key> <string>id</string> </key>