Support nested has_many :through filters in select filter
Fix index table reactiveness
Fix use of deprecated `buttons` method [form doc]
Merge pull request #2581 from shekibobo/2559-fix-reactive-index-table

Fix index table reactiveness
Merge pull request #2566 from shekibobo/2565-fix-nested-through-filters

Fix nested through filters. Fixes #2565.