fix: dropindex undefined when not moved
fix: dropindex undefined when not moved

UW-Madison-DoIT/angularjs-portal,UW-Madison-DoIT/angularjs-portal,UW-Madison-DoIT/angularjs-portal,davidmsibley/angularjs-portal,UW-Madison-DoIT/angularjs-portal,davidmsibley/angularjs-portal,davidmsibley/angularjs-portal,davidmsibley/angularjs-portal