Reverts testserver.py because it was failing in Python 3.4.

Author: HelioGuilherme66

test/resources/testserver/testserver.py

@@ -55,12 +55,8 @@ def send_head(self):
             else:
                 return self.list_directory(path)
         ctype = self.guess_type(path)
-        if ctype.startswith('text/'):
-            mode = 'r'
-        else:
-            mode = 'rb'
         try:
-            f = open(path, mode)
+            f = open(path, 'rb')
         except IOError:
             self.send_error(404, "File not found")
             return None
@@ -89,14 +85,12 @@ def stop_server(port=7000):
     conn.getresponse()
 
 def start_server(port=7000):
-    import os
     os.chdir(os.path.join(os.path.dirname(os.path.abspath(sys.argv[0])), '..'))
     server = StoppableHttpServer(('', port), StoppableHttpRequestHandler)
     server.serve_forever()
 
 
 if __name__ == '__main__':
-    import sys
     if len(sys.argv) != 2 or sys.argv[1] not in [ 'start', 'stop' ]:
         print("usage: {0} start|stop".format(sys.argv[0]))
         sys.exit(1)