From https://github.com/elastic/kibana/issues/48833 - [x] Use toast notifications to notify the user of success/failure of package installation <img width="974" alt="Screen Shot 2019-11-20 at 11 39 33 AM" src="https://user-images.githubusercontent.com/1676003/69258346-74220380-0b8a-11ea-8237-91ee04f067c0.png"> - [x] Implement a global state store (redux) with package installation statuses (currently status is stored in local component state and does not persist) <img width="856" alt="Screen Shot 2019-11-20 at 11 40 30 AM" src="https://user-images.githubusercontent.com/1676003/69258431-93209580-0b8a-11ea-9ba6-677b2fc16645.png">
From #48833