* Add ChannelStore.UpdateMultipleMembersNotifyProps
* Make UpdateMultipleMembersNotifyProps return updated values from the DB
* Add UpdateChannelMembersNotifications plugin API
* Extract i18n
* Fix style
* Make layers
* Change to PatchMultipleMembersNotifyProps
* Add limit to PatchChannelMembersNotifyProps
* Add additional unit tests
* Address feedback
* Lowercase decodeJSON
* Have PatchMultipleMembersNotifyProps update LastUpdateAt
* Fix tests that relied on unreliable return order
* Fix i18n