add django-nose
add brainstorming app; add models Brainstorming, Idea and BrainstormingWatcher with migrations; add REST viewsets and serializers
fix app structure; fix viewsets; add api app
add unittest2 and factory_boy as dependencies
add BrainstormingFactory and IdeaFactory; test writable-only creatorEmail field
use factory's build method to create non-persistent objects
add mock dependency
don't use null=True for char and text fields
add Brainstorming creation and retrieval tests
ignore .idea directory