Merge branch '1.9.x' of github.com:chamilo/chamilo-lms into 1.9.x

Author: jmontoyaa

main/calendar/agenda_list.php

@@ -36,6 +36,14 @@
     $this_section = SECTION_COURSES;
 } else {
     // Agenda is out of the course tool (e.g personal agenda)
+    
+    // Little hack to sort the events by start date in personal agenda (Agenda events List view - See #8014)
+    usort($events, function($a, $b) {
+        $t1 = strtotime($a['start']);
+        $t2 = strtotime($b['start']);
+        return $t1 - $t2;
+    });
+    
     $url = false;
     foreach ($events as &$event) {
         $event['url'] = api_get_self() . '?cid=' . $event['course_id'] .