Add utf-8 charset to api

src/httpServer.py

@@ -2,6 +2,7 @@ import http.server
 import json
 import logging
 
+
 def get_server(ip, port, answer_function):
     class Server(http.server.BaseHTTPRequestHandler):
 
@@ -16,10 +17,9 @@ def get_server(ip, port, answer_function):
             logging.info('Get request:' + text)
             print(text)
             self.send_response(200)
-            self.send_header('Content-type','text/plain')
+            self.send_header('Content-type', 'text/plain; charset=utf-8')
             self.end_headers()
 
-            
             self.wfile.write(res.encode())
 
     return http.server.HTTPServer((ip, port), Server)