Ensure encoding

Author: glorieux-f

web/src/main/java/com/github/oeuvres/alix/web/AlixServlet.java

@@ -122,6 +122,7 @@ protected void doGet(
         final HttpServletResponse response
     ) throws IOException {
         response.setHeader("Access-Control-Allow-Origin", "*");
+        response.setCharacterEncoding("UTF-8");
 
         final String pathInfo = pathInfo(request);
         final String[] segments = pathInfo.split("/");