v7.0-beta.176

• Change byte buffer pool clear method to unmap drained buffers.

• Move some LMDB related classes.

• Issue #2736 : Fix missing or wrongly appearing meta/context tab.

• Issue #2732 : Fix bug when opening active tasks tab for an empty folder.

• Issue #2734 : Improve search task info.

• Issue #2733 : Stop search buttons disappearing.

• Issue #2735 : Fix batch search across remote nodes.

• Issue #2739 : Add support for query parameters when performing batch searches.

• Issue #2520 : Add token authentication to data feed API.