Apply height css to limit height of logout modal and apply overflow:auto to add a scrollbar if needed so that we don't have to scroll to logout.

web/skins/classic/css/base/skin.css

@@ -736,3 +736,13 @@ a.flip {
 #objdetectModal .modal-content {
     width: fit-content;
 }
+
+#modalLogout .modal-dialog {
+  height: 100%;
+}
+#modalLogout .modal-content {
+  height: 90%;
+}
+#modalLogout .modal-body {
+  overflow:auto;
+}