public IActionResult LanguagesList(string language_state)
        {
            if (!LoginUtil.CheckIfLoggedIn(HttpContext))
            {
                return(View(nameof(Index)));
            }

            StateOfRequest mState;

            if (string.IsNullOrEmpty(language_state))
            {
                mState = new StateOfRequest("LangNo");
            }
            else
            {
                mState = JsonUtil.GetObjectFromJsonString <StateOfRequest>(language_state);
            }
            List <Language> languages = _languagesManager.GetOnePageOfLanguages(mState);

            ViewBag.LanguageState = JsonUtil.SetJsonStringFromObject(mState);
            return(View(languages));
        }