Better debugging
Expose the server name and the cluster name in the /admin/stats endpoint
Some HTML tweaking
ClusterManager: Check the replication status only on the loaded databases.
ClusterManager: Store the admin statistics both to server once and the database once.
RavenDB Admin endopint: Make it strongly typed in order to make it easier to use in cluster manager.
Store the DatabaseTransactionVersionSizeInMB on the database level, not in the server level. There is no need to have two collections for this.