99.7.3 (2019-03-13)

* wifi: added enable_guest option to wifi form (without this option it is not possible to set wifi)
* maintain: disappearing zero in automatic restarts form fix
* updater: api changes - enabled() can have tree states now
* refactoring: config pages splitted into separate modules
* disable WS filtering when controller-id is not set (fixes fitler notifications from ubus)
* second level menus implemented
* remote: description updated
* subordiantes: moved to a separate plugin