v7.0-beta.30

* Issue **#1503** : Further fix for enabled/disabled expression items and dashboard tab visibility.

* Issue **#1511** : Data pages now show pipeline names rather than pipeline UUIDs.

* Issue **#1529** : Fix error when selecting datasource in new dashboard.

* Fix NPE in SystemInfoResource.get().

* Issue **#1527** : Fixed missing aud in API eky tokens.

* Add missing guice binding for SystemInfoResource.

* Make export add new line to the end of all files to adhere to POSIX standard.

* Issue **#1532** : Fixed index shard criteria in UI.

* Change SecurityFilter to return a 401 on authentication exceptions.

* Move some health checks into SystemInfoResource.

* Remove healthchecks from rest resources and servlets that never give an unhealthy result.

* Add error info to AppConfigMonitor health check.