Django-extensions

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Changes:

- Revert: JSONField, revert Django 1.9 fix as it breaks the field (ticket 781)

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Changes:

- Fix: Django 1.9 compatibility
- New: runserver_plus, add --startup-messages to control when to show them
- New: added support for Python 3.5
- Improvement: show_template_tags, renamed from show_templatetags for consistency
- Removed: jquery library (after dropping support for Django 1.5)

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Changes:

- Fix: wheel still had the old migrations directory in the package

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Changes:

- Fix: migrations, fix BadMigrationError with Django 1.8+
- Fix: reset_db, Django 1.8+ compatibility fix
- Fix: runserver_plus, fix signature of null_technical_500_response for Django 1.8+
- Fix: graph_models, use force_bytes instead of .decode('utf8')
- Improvement: print_settings, add format option to only print values
- Improvement: print_settings, add format option for simple key = value text output
- Improvement: email_export, documentation updates
- Improvement: shell_plus, auto load conditional db expressions Case and When

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Changes:

- Fix: CreationDateTimeField, migration error
- Fix: ModificationDateTimeField, migration error
- Fix: shell_plus, options is not always in db config dictionary
- Fix: admin filters, contrib.admin.util fallback code
- Fix: graph_models, correctly support parsing lists for cli options
- Improvement: sqldsn, support postfix
- Improvement: utils, remove get_project_root function

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Changes:

- New: RandomCharField, prepopulates random character string
- New: (Not)NullFieldListFilter, filters for admin
- New: runserver_plus, integrate with django-pdb
- New: runserver_plus, add check_migrations from Django
- Improvement: show_urls, nested namespace support
- Improvement: show_urls, allow to specify alternative urlconf
- Improvement: show_urls, support i18n_patterns
- Improvement: show_urls, use --language to filter on a particular language
- Improvement: admin_generator, added docstrings to module
- Improvement: shell_plus, allow cli arguments to be passed to ipython
- Improvement: shell_plus, fixed PYTHONPATH bug when using django-admin shell_plus --notebook
- Improvement: shell_plus, set application_name on PostgreSQL databases
- Improvement: shell_plus, load user pypython config file
- Improvement: CreationDateTimeField, use auto_now_add instead of default ModificationDateTimeField
- Improvement: ModificationDateTimeField, use auto_now instead of pre_save method
- Improvement: ForeignKeyAutocompleteAdmin, added ability to filter autocomplete query
- Fix: shell_plus, support for pypython>=0.27
- Fix: shell_plus, load apps and models directly through the apps interface when available
- Fix: shell_plus, use ipython start_ipython instead of embed
- Fix: shell_plus, fix swalling ImportErrors with IPython 3 and higher
- Fix: dumpscript, fix missing imports in dumped script
- Fix: admin_generator, fix issues with Django 1.9
- Fix: template tags, move exception for import failure to inside of the template tags
- Fix: reset_db, fix for Django 1.9
- Fix: runserver_plus, fix for Django 1.9