add backand ticket/index changes, add backand\ticket\index export pdf, xls

backend/web/css/ticket-index-pdf.css

@@ -0,0 +1,17 @@
+*{
+    font-family: "Times New Roman";
+}
+
+table{
+    border-collapse: collapse;
+}
+
+th, td {
+    padding: 3px;
+    border: 1px solid  #e2e2e2;
+}
+
+
+.filter-table th{
+    text-align: left;
+}