* Adding Reaction store cache layer example
* Implementing reaction store in new caching system.
* Redis for reaction store
* Adding redis library
* Adding invalidation for DeleteAllWithEmojiName and other minor enhancements
* Adding initial race detector
* Remove setting of config twice
* Fixing config file watch and config reload on license save
* Fixing config file watch and config reload on license save
* Fixing build error
* Fixing locking issue
* Fixing makefile
* Fixing race in config
* Fixing race in status unit test
* Adding EE race tests
* Fixing race in cluster info
* Removing code that's isn't needed
* Fixing some more races
* Fixing govet issue
* Add sequence number to websocket connections and events
* Copy pointer instead of pass by value and use int64 over uint64
* Add more logging to missed events
* PLT-3193 Add channel notification preferences for push and email notifications
* unit tests, model validation and localization
* Feedback review
* Adding back allowFromCache check
* Setting push and email to use default settings
* Move props as constants
* address feedback
* Add app package and move logic over from api package
* Change app package functions to return errors
* Move non-api tests into app package
* Fix merge
