Remove usage of url.patterns as per Django's deprecation warnings.

mayan/apps/rest_api/classes.py

@@ -1,6 +1,6 @@
 from __future__ import unicode_literals
 
-from django.conf.urls import include, patterns, url
+from django.conf.urls import include, url
 from django.conf import settings
 from django.utils.module_loading import import_string
 
@@ -46,7 +46,6 @@ class APIEndPoint(object):
     def register_urls(self, urlpatterns):
         from .urls import urlpatterns as app_urls
 
-        app_urls += patterns(
-            '',
+        app_urls += [
             url(r'^%s/' % (self.name or self.app.name), include(urlpatterns)),
-        )
+        ]

mayan/apps/rest_api/urls.py

@@ -1,20 +1,18 @@
 from __future__ import unicode_literals
 
-from django.conf.urls import patterns, url
+from django.conf.urls import url
 
 from .views import APIBase, APIAppView, BrowseableObtainAuthToken
 
 
-urlpatterns = patterns(
-    '',
-)
+urlpatterns = [
+]
 
-api_urls = patterns(
-    '',
+api_urls = [
     url(r'^$', APIBase.as_view(), name='api_root'),
     url(r'^api/(?P<path>.*)/?$', APIAppView.as_view(), name='api_app'),
     url(
         r'^auth/token/obtain/$', BrowseableObtainAuthToken.as_view(),
         name='auth_token_obtain'
     ),
-)
+]