* Controller Manager now uses new Input Helpers, and has both Activations and Deactivation buttons as properties.

(cherry picked from commit 4172254f01b66e6dd98f9b041c2f228536229287)

* Execution order is now constant.

* Updated enum values to match new settings

* PR Feedback

* Typo Fix

* Revert Unwanted upgrade change

* Proper usages for sample

* Fix Button Values for Grab

Added null checks around Controller Manager to handle controllers that connect before the first frame. (#10)