Django 2.0 compatibility (requirement)

- URLs to path() style
- Misc updates
- Namespaces all URL references
- Removes dependency on AutoSlugField
- Cleaner reversals
- Cleaner docstrings

setup.py

@@ -99,7 +99,7 @@ setup(
     include_package_data=True,
     zip_safe=False,
     tests_require=['tox'],
-    install_requires=['django-autoslug', 'unidecode', ],
+    install_requires=['unidecode', ],
     cmdclass={
         'clean': Clean,
         'test': Tox,