When using hazelcast, removing the hazelcast cookie is required at logout
Fix #772
Merge remote-tracking branch 'origin/master'

Conflicts:
	app/templates/src/main/webapp/_app.js
Fix #794
Fix #849
Merge pull request #847 from henri-tremblay/logout_fails_with_hazelcast

When using hazelcast, removing the hazelcast cookie is required at logout