confirm on 'delete'
onComplete -> onConfirm

There's wrong infomration on plugin's web site.
Merge branch 'master' into confirm_on_delete

Conflicts:
	zeppelin-web/app/templates/zql/edit.hbs
	zeppelin-web/app/views.js
Merge pull request #19 from NFLabs/confirm_on_delete

Confirm message on delete