Custom 403 Page

Added custom 403 page.

Change-Id:Id5ccb3835748c9a627a4a27b9332abf1f45a1648

dash/main/errors.py

@@ -5,6 +5,10 @@ from . import main
 def page_not_found(e):
     return render_template('404.html'), 404
 
+@main.app_errorhandler(403)
+def internal_server_error(e):
+    return render_template('403.html'), 403
+    
 @main.app_errorhandler(500)
 def internal_server_error(e):
     return render_template('500.html'), 500

dash/templates/403.html

@@ -0,0 +1,13 @@
+{% extends "adminlte/base_without_nav.html" %}
+
+{% block title %}403 ERROR{% endblock %}
+{% block description %}dash-stack - Permission Error{% endblock %}
+{% block bodytag %}login-page{% endblock %}
+
+{% block body %}
+
+<div class="page-header">
+    <h1>You do not have permission to access this page.</h1>
+</div>
+
+{% endblock %}