switch to GPL ExtJS 6.2.0

orun/extjs/app.html

@@ -1,13 +1,13 @@
 <html>
 <head>
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-    <title>%s</title>
-    <script src="/ext_421/ext-all.js"></script>
-    <link rel="stylesheet" href="/ext_421/resources/ext-theme-%s/ext-theme-%s-all.css">
+    <title>{title}</title>
+    <script src="/ext_620/ext-all.js"></script>
+    <link rel="stylesheet" href="/ext_421/{theme_model}/theme-{theme}/resources/theme-{theme}-all.css">
     <script>
-    Ext.onReady(function () {
-    	%s
-    });
+    Ext.onReady(function () {{
+    	{script}
+    }});
     </script>
 </head>
 <body></body>