gistfile1.js

$scope.addProviders = function() {
		$scope.report.filters.providers = $scope.report.filters.providers.concat($scope.providersToAdd);
		angular.forEach($scope.providersToAdd, function(provider) {
			$scope.providers.remove(provider);
		});
		$scope.providersToAdd = [];
	};
	$scope.removeProviders = function(){
		$scope.providers = $scope.providers.concat($scope.providersToDelete);
		angular.forEach($scope.providersToDelete, function(provider) {
			$scope.report.filters.providers.remove(provider);
		});
		$scope.providersToDelete = [];
	};