Merge pull request #149 from wagtail/144-upgrade-django-wagtail

[144] Upgrade Django and Wagtail

.travis.yml

@@ -8,7 +8,7 @@ env:
 
 before_install:
   - sudo apt-get update
-  - sudo apt-get install -qy -o Dpkg::Options::="--force-confold" docker-engine coreutils
+  - sudo apt-get install -qy -o Dpkg::Options::="--force-confold" docker-ce coreutils
 
 script:
   # Bring up the postgres, redis, and app containers

requirements/base.txt

@@ -1,8 +1,8 @@
-Django==1.10.7
+Django==1.11.3
 django-dotenv==1.4.1
 # http://docs.wagtail.io/en/v1.8.1/topics/search/backends.html#elasticsearch-backend
 # Not utilized by default; uncomment and review the above document if you require elasticsearch
 # elasticsearch==5.1.0
-wagtail==1.9.1
+wagtail==1.11
 wagtailfontawesome==1.0.6
 Pillow==4.0.0