Filter 2FA sessions in 2ndFA manager module

lemonldap-ng-manager/site/coffee/2ndfa.coffee

@@ -154,7 +154,8 @@ llapp.controller 'SessionsExplorerCtrl', ['$scope', '$translator', '$location',
 	# SESSIONS MANAGEMENT
 	
 	# Filter 2FA sessions
-	$scope.filter2FA = -> 	
+	$scope.filter2FA = ->
+		$scope.data = []
 		$scope.updateTree '', $scope.data, 0, 0
 	
 	# Delete U2F key

lemonldap-ng-manager/site/htdocs/static/js/2ndfa.js

@@ -181,6 +181,7 @@
         return $scope.showM = false;
       };
       $scope.filter2FA = function() {
+        $scope.data = [];
         return $scope.updateTree('', $scope.data, 0, 0);
       };
       $scope.deleteU2FKey = function() {