JS: identify an entity reference for auto-complete in ExpressionBox
JS: identify an entity reference for auto-complete in ExpressionBox

Allows an entity to be identified from a much more complex expression.

Signed-off-by: Harry King <409587b9e6671aa0763646191d292852dc49a658@gmail.com>

jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim