Code style update and fallback typeAlias check

Fix setting of $typeAlias in batch method so it sets $this->typeAlias instead of $typeAlias.  Also added check to not overwrite typeAlias if it already exists.

Added if/then clause to set $this->typeAlias if it has not been set in batchMove, batchCopy, batchAccess, and batchLanguage

Codestyle change in saveorder to change call from $this->createTagsHelper to static::createTagsHelper as is used in every other call to createTagsHelper