let the client handle the redirect, don't do it internally

Say a user wants to get http://www.example.com/protected/ and that if
this service wasn't behind twitcher, the user would get redirected to
http://www.example.com/protected/other/
Now if this service is behind twitcher, twitcher follows redirects
internally and returns http://www.example.com/protected/other/ to
the user. Now the user's url location is still
http://www.example.com/protected/ but the content is
http://www.example.com/protected/other/
If the protected web server generates relative urls in its content or
redirects, these urls are then broken.

twitcher/owsproxy.py

@@ -67,20 +67,20 @@ def _send_request(request, service, extra_path=None, request_params=None):
     url = service['url']
     if extra_path:
         url += '/' + extra_path
+    elif request.url.endswith('/'):
+        url += '/'
     if request_params:
         url += '?' + request_params
     LOGGER.debug('url = %s', url)
 
-    # forward request to target (without Host Header)
     h = dict(request.headers)
-    h.pop("Host", h)
     h['Accept-Encoding'] = None
     #
     service_type = service['type']
     if service_type and (service_type.lower() != 'wps'):
         try:
             resp_iter = requests.request(method=request.method.upper(), url=url, data=request.body, headers=h,
-                                         stream=True, verify=service.verify)
+                                         stream=True, verify=service.verify, allow_redirects=False)
         except Exception as e:
             return OWSAccessFailed("Request failed: {}".format(e))