v6.0-alpha.8

* Issue **#593** : Fixed node save RPC call.

* Issue **#591** : Made the query info popup more configurable with a
title, validation regex etc. The popup will now only be displayed when
enabled and when a manual user action takes place, e.g. clicking a
search button or running a parameterised execution with one or more
queries.

* Added 'prompt' option to force the identity provider to ask for a
login.