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
added transfer model
added token to transfer model
added transfer mailer
transfers tests
instantly run delayed jobs in development
slight cleanup
added target user to transfer
Fixed issue where URLs validation doesn't update
Fixed survey sidebar misalignment
Updated error messages for new URL error
Updated URL field to show an explanation field if invalid
refactored abilities