Activity per project.
user couchtype
automatic role setting by _changes watcher + notification system
Merge branch 'slaivyn' into 0.1

Conflicts:
	modules/Activity/fields.js
	modules/Activity/utils.js
	modules/Activity/views.js
	modules/Demand/routes.coffee
	modules/Project/routes.coffee
	partials/demand/show.html
	partials/project/show.html