Fix display of initial value in editable list view

Currently, the editable list view is not setting the default value correctly.

With this change, if the value is "Active", when the user first clicks the editable field it will automatically select "Active" in the dropdown.

flask_admin/model/widgets.py

@@ -71,8 +71,8 @@ class XEditableWidget(object):
         field inside of the FieldList (StringField, IntegerField, etc).
     """
     def __call__(self, field, **kwargs):
-        value = kwargs.pop("value", "")
-
+        kwargs.setdefault('data-value', kwargs.pop('value', ''))
+        
         kwargs.setdefault('data-role', 'x-editable')
         kwargs.setdefault('data-url', './ajax/update/')
 
@@ -92,7 +92,7 @@ class XEditableWidget(object):
         kwargs = self.get_kwargs(subfield, kwargs)
 
         return HTMLString(
-            '<a %s>%s</a>' % (html_params(**kwargs), value)
+            '<a %s>%s</a>' % (html_params(**kwargs), kwargs['data-value'])
         )
 
     def get_kwargs(self, subfield, kwargs):