Core: Added tree view expansion state persistence. The default is 'closed'.
Core: Added tree view expansion state persistence. The default is 'closed'.

beni55/engi,engijs/engi,vizorvr/patches,vizorvr/patches,vizorvr/vizor,vizorvr/vizor-create,beni55/engi,vizorvr/vizor-create,vizorvr/vizor-create,engijs/engi,vizorvr/vizor,vizorvr/patches,vizorvr/patches,vizorvr/patches,engijs/engi,beni55/engi,vizorvr/vizor