Add templates.json and fix bugs

public/templates/templates.json

@@ -0,0 +1,20 @@
+{
+    "templates":[
+        {
+            "name":"error",
+            "dir_name":"error",
+            "html_file":"error.html",
+            "css_files":[
+                "error.css"
+            ]
+        },
+        {
+            "name":"setup",
+            "dir_name":"setup",
+            "html_file":"setup.html",
+            "css_files":[
+                "setup.css"
+            ]
+        }
+    ]
+}