also link to dataset from level icon
added flag to remove datasets from view
removed datasets don't appear on public index
allow users to be admin
admin update actions
interface to allow admins to remove datasets
added readme section
Merge remote-tracking branch 'origin' into admin-functions

Conflicts:
	db/schema.rb
Merge pull request #586 from theodi/admin-functions

Admin functions
Merge remote-tracking branch 'origin' into questionnaire-transfers

Conflicts:
	db/schema.rb