change gate to notice and add type field
Merge branch 'develop' of github.com:DonutWorks/Ari into feat/change-gate-to-notice

Conflicts:
	app/views/admin/notices/show.html.erb
	db/schema.rb
Merge pull request #246 from DonutWorks/feat/change-gate-to-notice

#242 change gate to notice and add type field