Upgrade to version 1.1.0

Test Sentilo on Redis 2.8.6.
Error messages in JSON format too.
Improve API Catalog access: only owner (or admin) could update/delete a
resource.
Possibility to set a ttl (time-to-live) on any content (observation, order
or alarm) published in the platform.
Fix some minor bugs.
Merge remote-tracking branch 'sentilo-github/master'

Conflicts:
	sentilo-catalog-web/pom.xml