Merge pull request #1341 from jloguercio/1.11.x

Remove Student/Teacher view from places that is not in the course and it tools

main/inc/lib/banner.lib.php

@@ -729,7 +729,7 @@ function return_breadcrumb($interbreadcrumb, $language_file, $nameTools)
     /* Part 4 . Show the teacher view/student view button at the right of the breadcrumb */
     $view_as_student_link = null;
     if ($user_id && isset($course_id)) {
-        if ((api_is_course_admin() || api_is_platform_admin()) && api_get_setting('student_view_enabled') == 'true') {
+        if ((api_is_course_admin() || api_is_platform_admin()) && api_get_setting('student_view_enabled') == 'true' && api_get_course_info()) {
             $view_as_student_link = api_display_tool_view_option();
         }
     }