Fix SliverNodeInline permissions (#476)
Fix SliverAdminForm on readonly access.
Remove unused node setting NODES_CERT_EXP_DAYS
Notify operators when user is activated (#449)
Prevent fixtures from conflicting with pre_save signal

Use pre_save 'raw' parameter:
https://code.djangoproject.com/ticket/12610
Avoid false notifications on user activation (#449 note-3)
Fix MultiSelectField default form init.
Remove Template defaults for type and node_archs.
Add test to check notity_operators functionallity (#449)
Show in dashboard user's hosts connectivity to management network (#47)
Cosmetics: handle tickets with long subject.
Return 404 on state_refresh for non-existing object.
Fix notify_operators on user approval (#449)
Fix group validation on node creation (#485)
Validate sliver private interfaces (#482)
Sliver can have several ifaces of type management.
Test sliver changelist wtih all slivers.

Check if works when exists sliver with multiple management
interfaces (updated fixtures to include that kind of sliver)
Avoid show sliver nested in random slice on changeview.
Include djcelery.css (unsolved upstream bug) (#390)
Add object_id validation for overrided change_views.