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

mayan/apps/permissions/urls.py

@@ -1,6 +1,6 @@
 from __future__ import unicode_literals
 
-from django.conf.urls import patterns, url
+from django.conf.urls import url
 
 from .api_views import APIRoleListView, APIRoleView
 from .views import (
@@ -8,8 +8,7 @@ from .views import (
     SetupRoleMembersView, SetupRolePermissionsView
 )
 
-urlpatterns = patterns(
-    '',
+urlpatterns = [
     url(r'^role/list/$', RoleListView.as_view(), name='role_list'),
     url(r'^role/create/$', RoleCreateView.as_view(), name='role_create'),
     url(
@@ -25,10 +24,9 @@ urlpatterns = patterns(
         r'^role/(?P<pk>\d+)/members/$', SetupRoleMembersView.as_view(),
         name='role_members'
     ),
-)
+]
 
-api_urls = patterns(
-    '',
+api_urls = [
     url(r'^roles/$', APIRoleListView.as_view(), name='role-list'),
     url(r'^roles/(?P<pk>[0-9]+)/$', APIRoleView.as_view(), name='role-detail'),
-)
+]