Breadcumb no longer blocks the logout button.

Not sure why the top bar is blocking the logout button. This patch allows the user  to see and click the logout button.

designs/pappu687/adminer.css

@@ -286,6 +286,10 @@ input[name=logout]:hover {
 	color:red;	
 }
 
+.logout {
+	z-index:3;
+}
+
 .js .column {
 	background:#ecf0f1;
 }