durable subscriptions: console

The console needs to offer the new address type, add that type to the
available values for type filtering and of course include addresses
of that type in the address list. The address creation wizard will
display a combobox containing all topics when the type selected is a
subscription (this allows wildcard patterns to be entered).

The console will retrieve statistics for all subscriptions from the
broker hosting them. The sender field will not be relevant, nor will
the shard count.

The stats for topics will be unaffected. A durable subscription will
continue to be reflected in the stats for the topic it belongs to.