* Remove unreachable code
`view_last_screen` is never used.
* Remove unused action `user_activity_started`
Nothing listens to this, so it's pointless.
* Symbolic constant for `Action.UserActivity`
* Define symbolic constants for more `Action`s
Constants for some actions that are emitted by `Lifecycle`
* Add commercial licence and update config files
* Update license in headers
* Revert "Update license in headers"
This reverts commit 7ed7949485e88889a9ffc8075a9df1f8e936777e.
* Update only spdx id
* Remove LicenseRef- from package.json
LicenseRef- no longer allowed in npm v3 package.json
This fixes the warning in the logs and failing build check.
