* Clean up DistributedCache and add additional checks
* Add IEnumerable overloads to DistributedCacheExtensions
* Update handlers to use new IEnumerable overloads
* Move DistributedCacheExtensions to Core
* Restructure cache refreshers into folders
* Add IDistributedCacheNotificationHandler
* Rewrite DistributedCacheBinder into seperate IDistributedCacheNotificationHandler implementations
* Obsolete DistributedCacheBinder and use new IDistributedCacheHandler implementations
* Clean up ServerMessengerBase
* Ensure cache refreshers only process distinct values
* Add support for publishing multiple notifications and filter on handler type
* Suppress compatibility issues
* Remove DistributedCacheBinder and suppress compatibility issues
* Add ScopedNotificationPublisher<TNotificationHandler>
* Improve notification type lookup/enumeration
* Ensure INotificationAsyncHandler handles multiple notitications sequentially
* Minimize cache instruction JSON
* Chunk notifications by type to keep publish order
* Only serialize required RefreshInstruction properties
* Update language models to get and set manual name
* Save custom language name in controller
* Rewrite AngularJS language edit view and controller
* Cleanup language overview
* Remove icon from language overview
* Make styling of control group the same as properties
* Ensure both ISO code and culture name are set in language model
* Use new language model constructor
* Update tests to use new language constructor
* Update culture name in dictionary package export
* Use language name in dictionary
* Fix language nullability issues
* Cleanup GetAllCultures and added null checks
* Re-add obsolete constructors
* Make language name required and update Cypress test
* Fix routing/saveNewLanguages Cypress test
* Make language name optional (improved backwards compatibility)
Co-authored-by: Ronald Barendse <ronald@panoramastudios.nl>
