* Issue **#2855** : Add propety `stroom.index.writer.slowIndexWriteWarningThreshold` to configure the threshold for warning about slow index shard writes.

* Issue **#2856** : Strip `[` and `]` from IPv6 addresses in the logged events to ensure schema compliance.

* Issue **#2857** : Add `/stroomAdmin/filteredhealthcheck` and `/proxyAdmin/filteredhealthcheck` servlets to allow filtering of the health checks that are run.

* Issue **#2863** : Fix UI hanging when data viewer navigation buttons are clicked repeatedly and very quickly.