models.py: Slice, Segment and Block
Correct formating issues in models module
blockwisesopnet: control code for block wise sopnet models
Testing SOPNET control code
Remove unneeded pass statements
Add infrastructure to move sopnet code in own package
Move Sopnet code to own application
Djsopnet: Add basic migrations
Djsopnet: add basic admin views for models
Add Celery-sopnet dependency for djsopnet
Djsopnet: add sample code for celery-sopnet inegration
Djsopnet: simplify URL interface further

The 'sopnet/' part isn't needed anymore, now that Djsopnet is an own Django
application.
Djsopnet: add bootstrap and angular libs for test page
Let django know about the celery-sopnet tasks
Djsopnet: add basic AngularJS overview page
Make celerysopnet dependency a non-development dependency
Update Celery to version 3.1.7 and Django-celery to version 3.1.1

The integration of Celery in Django has changed from version 3.1 on,
django-celery is not required anymore to start tasks, etc.. However, it might
still be of use for CATMAID, since it can be used for the database result
backend and the Django periodic task admin.
Remove django-kombu, because of it's inclusion in kombu [settings update]

Please update your settings files according to the modified settings.py.example:
Replace the lines

  INSTALLED_APPS += ("djkombu",)
  BROKER_BACKEND = "djkombu.transport.DatabaseTransport"

by these lines:

  INSTALLED_APPS += ("kombu.transport.django",)
  BROKER_URL = 'django://'
Simplify Djsopnet URLs even more
Adjust formatting of Djsopnet URL configuration