[IMP] http: remove outdated logic for redirects

Section 7.1.2 of RFC 7231 requires preservation of URL fragment
through redirects. Our old JS redirection code was necessary when
browsers did not consistently implement it. Apart from a few odd
and marginal exceptions they all do it now, so we can stop that.

odoo/http.py

@@ -161,31 +161,20 @@ def dispatch_rpc(service_name, method, params):
         raise
 
 def local_redirect(path, query=None, keep_hash=False, code=303):
+    # FIXME: drop the `keep_hash` param, now useless
     url = path
     if not query:
         query = {}
     if query:
         url += '?' + werkzeug.url_encode(query)
-    if keep_hash:
-        return redirect_with_hash(url, code)
-    else:
-        return werkzeug.utils.redirect(url, code)
+    return werkzeug.utils.redirect(url, code)
 
 def redirect_with_hash(url, code=303):
-    # Most IE and Safari versions decided not to preserve location.hash upon
-    # redirect. And even if IE10 pretends to support it, it still fails
-    # inexplicably in case of multiple redirects (and we do have some).
-    # See extensive test page at http://greenbytes.de/tech/tc/httpredirects/
-    if request.httprequest.user_agent.browser in ('firefox',):
-        return werkzeug.utils.redirect(url, code)
-    # FIXME: decide whether urls should be bytes or text, apparently
-    # addons/website/controllers/main.py:91 calls this with a bytes url
-    # but addons/web/controllers/main.py:481 uses text... (blows up on login)
-    url = pycompat.to_text(url).strip()
-    if urls.url_parse(url, scheme='http').scheme not in ('http', 'https'):
-        url = u'http://' + url
-    url = url.replace("'", "%27").replace("<", "%3C")
-    return "<html><head><script>window.location = '%s' + location.hash;</script></head></html>" % url
+    # Section 7.1.2 of RFC 7231 requires preservation of URL fragment through redirects,
+    # so we don't need any special handling anymore. This function could be dropped in the future.
+    # seealso : http://www.rfc-editor.org/info/rfc7231
+    #           https://tools.ietf.org/html/rfc7231#section-7.1.2
+    return werkzeug.utils.redirect(url, code)
 
 class WebRequest(object):
     """ Parent class for all Odoo Web request types, mostly deals with