Fix downloading exam reports

Client js tried to get (incorrectly) discipline id from URL and got error at the server side.

media/js/discipline/rating/exam.js

@@ -41,7 +41,7 @@ $(function () {
     var jTdInfo_wrap = $("#tdInfo_wrap");
     var jTdInfo = jTdInfo_wrap.children('#tdInfo');
     var g_URL = (window.location.href).split("/");
-    var g_disciplineID = g_URL[g_URL.length - 1];
+    var g_disciplineID = $('#disciplineID').val();
 
     // on page loaded
     // Настройки дисциплины:

media/js/discipline/rating/rate.js

@@ -40,7 +40,7 @@ $(function () {
     var jTdInfo_wrap = $("#tdInfo_wrap");
     var jTdInfo = jTdInfo_wrap.children('#tdInfo');
     var g_URL = (window.location.href).split("/");
-    var g_disciplineID = g_URL[g_URL.length - 1];
+    var g_disciplineID = $('#disciplineID').val();
 
     var onCursorChange = function (cursor) {
         console.log('(' + cursor.row + ', ' + cursor.col + ')\n');

~dev_rating/application/classes/Controller/Handler/FileCreator.php

@@ -193,7 +193,7 @@ class Controller_Handler_FileCreator extends Controller_Handler
             ->rule('stage', 'digit', [0, 1, 2, 3]);
 
         if (!$this->post->check())
-            throw new HTTP_Exception(417, "Некорректные параметры запроса!");
+            throw HTTP_Exception::factory(417, "Некорректные параметры запроса!");
 
         // parameters
         $disciplineID = $this->post['disciplineID'];

~dev_rating/application/views/teacher/discipline/rating/exam.twig

@@ -217,4 +217,5 @@
 		{{ Discipline_JSON|raw }}
 	</div>
 	<input type="hidden" id="pageType" value="exam"/>
+    <input type="hidden" id="disciplineID" value="{{ Discipline.ID }}"/>
 {% endblock %}

~dev_rating/application/views/teacher/discipline/rating/rate.twig

@@ -208,4 +208,5 @@
 		{{ Discipline|json_encode|raw }}
 	</div>
 	<input type="hidden" id="pageType" value="rating"/>
+	<input type="hidden" id="disciplineID" value="{{ Discipline.ID }}"/>
 {% endblock %}