Omitting terminal slash in form action breaks POST data due to redirect

[mrtact@…]

Steps to repro

1. Add an urlpattern to your app like so:

   (r'^search/$', 'search'), 
   

2. Add a search view that spits out debugging info:

   def search(request):
       return HttpResponse(linebreaks(escape(request)))
   

3. Create a form that submits to this view:

   <form method="POST" action="/search"> <!-- Note missing terminal / -->
   

4. Test the form.

Expected

Any data submitted via the form show up as key:value pairs in the request.POST.

Actual

The POST is empty, because the framework redirects the POST without the slash to the slashified URL as a GET. It should probably detect the POST and forward the dict full of useful form data.

[Jacob]

This is a duplicate of #277.