Bug 1022475 - (Part I) Implement InputAppsTransitionManager
Bug 1022475 - (Part II) Let KeyboardManager use it
Bug 1022475 - (Part III) Fix JS marionette tests
Bug 1022475 - (Part VI) Fix Python tests
Bug 1023046 - Finetune app to app tranisiton by ordering
Bug 1013207 - [Keyboard][Performance] Lazily load l10n.js
Bug 1023238 - Remember my choice is not the default option pre-selected in GUM permission
Bug 1016241 - [Collections App] Populate collections with installed apps