Django-supervisor

* Fix compatibility with Django 1.10; thanks Gabriel Duman.

* Fix cyclic import dependency in Django 1.9; thanks Alexander Komkov.

* Remove use of deprecated django.util.importlib; thanks David Costa.
* Fix typo in documentation; thanks Shicha An

* Only require watchdog to be available if we're actually using the
autoreload functionality; thanks Andrew Pendleton.

* Remove trailing slashes in MANIFEST.in, which break setuptools when
used on Windows.

* Remove support for application-supplied config files. They seemed to be
causing more problems than they solved, and none of the built-in ones
provided more than a few lines of logic.
* Remove the default "runserver" program, for the same reasons as above.
* Add setting and option to specify the supervisord config file; that's
SUPERVISOR_CONFIG_FILE and --config-file respectively.
* Add "templated" template filter to apply templating to other config files;
thanks Michael Rooney.
* Make autoreload include/ignore patterns configurable via settings;
thanks Hannes Struss.
* Don't autoreload when .pyc or .pyo files change, only .py files. This
avoids spurious reloads when a .py file is compiled for the first time.