[extensions-web] django: bump to current 1.11 LTS

[Yuri Konotopov <ykonotopov src gnome org>]

commit 8bc9ec229d87bff4011d9e562094e15986f00231
Author: Yuri Konotopov <ykonotopov gnome org>
Date:   Sat Dec 1 23:56:22 2018 +0400

    django: bump to current 1.11 LTS

 requirements.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/requirements.txt b/requirements.txt
index 0d73079..18d89a4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-Django == 1.8.15
+Django >= 1.11,<1.12
 django-autoslug >= 1.4.1
 django-contrib-comments == 1.7.3
 django-registration == 2.1.2