v6.0-alpha.10

* Issue **#523** : Changed permission behaviours for copy and move to
support `None`, `Source`, `Destination` and `Combined` behaviours.
Creating new items now allows for `None` and `Destination` permission
behaviours. Also imported items now receive permissions from the
destination folder. Event logging now indicates the permission behaviour
used during copy, move and create operations.

* Issue **#480** : Change the downloaded search request API JSON to have
a fetch type of ALL.

* Issue **#623** : Fixed issue where items were being added to sublist
causing a stack overflow exception during data retention processing.

* Issue **#617** : Introduced a concept of `system` document types that
prevents the root `System` folder type from being created, copied,
deleted, moved, renamed etc.

* Issue **#622** : Fix incorrect service discovery based api paths,
remove authentication and authorisation from service discovery

* Issue **#568** : Fixed filtering streams by pipeline in the pipeline
screen.

* Issue **#565** : Fixed authorisation issue on dashboards.