If the actions from the admin changelist view are used, the user will be redirected to the changeliste view, but if a filter or search was active, this information will be lost after redirection.
We discovert this behaviour as problematic in different satchmo/django-based shops we are hosting. If our users filter products for a specific category and use an action to mark some of them as featured products, they will end up in the changelist view, but see all products again. This also affects pagination in changelist views, because this information is also lost after redirection. Most of our users expected these filters to be remembered after action usage.
I stripped down the reason to the package django.contrib.admin.options in the class ModelAdmin. The method response_action will return a HttpResponseRedirect('.') when the action itself does not return a response. The Location-header will then be "fixed" in django.http.utils in the function fix_location_header. This function seems to enable some kind of "relative redirection feeling" in django. It uses HttpRequest.build_absolute_uri.
A simple fix / enhancement would be to change ModelAdmin.response_action to return HttpReponseRedirect(request.build_absolute_uri()) if the action itself does not return a response. Alternative would be to use HttpReponseRedirect(''), but I am not sure if this is a "clean" way.
I will attach patches for both variants shortly.
