Make django-admin-ordering a dependency

.travis.yml

@@ -40,6 +40,6 @@ matrix:
     - env: REQ="https://github.com/django/django/archive/master.zip#egg=Django"
 install:
   - pip install -U pip wheel
-  - pip install $REQ FeinCMS django-mptt Pillow
+  - pip install $REQ FeinCMS django-admin-ordering django-mptt Pillow
   - python setup.py install
 script: cd tests && ./manage.py test -v2 testapp

CHANGELOG.rst

@@ -5,6 +5,9 @@ Change log
   running linters and tests locally.
 * Reformatted the project using `black
   <https://black.readthedocs.io/>`__
+* Made `django-admin-ordering
+  <https://github.com/matthiask/django-admin-ordering/>`__ a dependency.
+
 
 0.12
 ----

form_designer/admin.py

@@ -16,18 +16,9 @@
 from django.utils.encoding import smart_text
 from django.utils.translation import ugettext_lazy as _
 
+from admin_ordering.admin import OrderableAdmin
 from form_designer import models
 
-try:
-    from admin_ordering.admin import OrderableAdmin
-
-    class Inline(OrderableAdmin, admin.TabularInline):
-        pass
-
-
-except ImportError:
-    Inline = admin.TabularInline
-
 if six.PY3:
     UnicodeWriter = csv.writer
 else:
@@ -146,7 +137,7 @@ def clean(self):
         return data
 
 
-class FormFieldAdmin(Inline):
+class FormFieldAdmin(OrderableAdmin, admin.TabularInline):
     extra = 0
     model = models.FormField
     prepopulated_fields = {"name": ("title",)}

setup.py

@@ -22,6 +22,7 @@ def read(filename):
     platforms=["OS Independent"],
     packages=find_packages(exclude=[]),
     include_package_data=True,
+    install_requires=["django-admin-ordering"],
     classifiers=[
         "Development Status :: 5 - Production/Stable",
         "Environment :: Web Environment",

tox.ini

@@ -24,6 +24,7 @@ deps =
     Django
     Pillow
     FeinCMS
+    django-admin-ordering
     django-mptt
     coverage
 changedir = {toxinidir}