Fix variable name in token validation and add login template

public/templates/templates.json

@@ -18,5 +18,11 @@
         "dir_name":"entrys_frontend",
         "html_file":"entrys_frontend.html",
         "css_files":[]
+    },
+    "login":{
+        "name":"login",
+        "dir_name":"login",
+        "html_file":"login.html",
+        "css_files":[]
     }
 }