If active highlander is deactivated and allowHighlanderDeactivate is true, set the active property of the group to null
Merge pull request #585 from MaKleSoft/ENYO-3607

ENYO-3607: Fixed broken allowHighlanderDeactivate behavior

Reviewed-By: Ben Combee (ben.combee@lge.com)
Set attribute value unconditionally in setValue.
DCO-1.1-Signed-Off-By: Kevin Schaaf <kevin.schaaf@lge.com>
Reviewed-By: Gray Norton <gray.norton@lge.com>