filemanager: find a new unique name when file copy clashes

src/js/filemanager.js

@@ -512,7 +512,7 @@ app.controller('FileManagerController', ['$scope', '$translate', '$timeout', 'Cl
                 async.eachLimit(collectedFiles, 5, function (entry, callback) {
                     var newFilePath = sanitize($scope.cwd + '/' + ((destinationEntry && destinationEntry.isDirectory) ? destinationEntry.fileName : '') + '/' + entry.fullFilePath);
 
-                    // TODO this will NOT overwrite files in destination!
+                    // This will NOT overwrite but finds a unique new name to copy to
                     Client.filesCopy($scope.id, $scope.type, entry.fullFilePath, newFilePath, callback);
                 }, function (error) {
                     if (error) return Client.error(error);