Sort queues alphabetically by id

The MR only sorts by id, when the queue_order module is not installed.

The queue worker plugin manager has no options to sort the queue worker plugins. For that reason queue_order module was developed)
Changes look good, but we must save the natural order of queues provided by the plugin manager. Let's make the sorting optional as an additional configuration. Existing usages of the module have to keep the same ordering as it is now, so project maintainers can opt-in to use sorting. And we can set alphabetical sorting by default for new installs. In the configuration description, we must add information about the natural ordering representing the order of queues processed by the cron handler. Also, the configuration will have no effect if the queue_order module is enabled.

Sorting has to happen on the client side to keep the possibility of confirming changes by hitting the `Save changes` button. We also need to provide the chance to choose the values for sorting — title or machine name.

voleger → changed the visibility of the branch 3358470-sort-queues-alphabetically to hidden.

voleger → closed merge request !30