create collections based on Julian's data model v0.3
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Merge pull request #23 from eskim/data-model-0.3

create collections based on Julian's data model v0.3
remove unnecessary 'this'
Merge pull request #31 from eskim/data-model-0.3

remove unnecessary 'this'
Merge master branch

Conflicts:
	app/lib/collections.coffee
create modeling work item dialog