Adds model field for project status refs #60

Adds field status with for possible choices:
 - Draft
 - Needs Review
 - Published
 - Denied
Changes to the projects application.

New model fields, views, and methods.
New admin action for publishing projects

Admin interface now allows for changing the status of multiple
projects to published.
Adds new admin action for projects application.

"Deny selected projects": Mark all projects selected
as denied. These projects will not be go live.
Merge remote-tracking branch 'origin/master' into merge
fix migrations problem

Fixed conflicts that between my local repo migration history
and githubs. Tigthen up project page. Added new two fields to
Project: 'status' and 'script'
Deleted stale migration files that were conflicting

Database had to be drop and a conflict with old migration
needed to be fixed. This commit fixes this conflict.
make is_active field default to True

I was getting 404 because of our ObjectisActive
Mixin. Setting this field to True fixed it.
Changes admin actions implementation.

The queryset was getting updated but the
save method was not being called.
Merge pull request #67 from rapidsms/south

Fixes South MIgrations