organized imports in settings app

roomlist/settings/urls.py

+# core django imports
 from django.conf.urls import patterns, include, url
 from django.contrib.auth.decorators import login_required
 from django.views.generic import TemplateView
-
 from django.contrib import admin
 
+
 admin.autodiscover()
 admin.site.login = login_required(admin.site.login)