ECOM-986 updated class being used by JS for carats to use classes being loaded…

ECOM-986 updated class being used by JS for carats to use classes being loaded on the page via lms-style-course-vendor.css

lms/templates/instructor/instructor_dashboard_2/e-commerce.html

@@ -146,8 +146,8 @@
 
    $(function () {
        var icons = {
-           header: "ui-fa-circle-arrow-e",
-           activeHeader: "ui-fa-circle-arrow-s"
+           header: "ui-icon-carat-1-e",
+           activeHeader: "ui-icon-carat-1-s"
        };
        var act = 0;
        $("#accordion").accordion(