DEN-9639: Code Review 0 - Addressed code reviews - Reoved LOG_DEBUG_UI since the DEBUG log is all about UI and adding a UI to it was useless. - Removed the time stamp from the POST start/stop log since the log itself has timestamp. - Added more documentation to the ApplicationPOST class. - Renamed the FileSystem to ShaSum check in the ApplicationPOST. - Updated the WiFi POST check funciton. - Updated the initial Screen to pause the animation when the UI navigates out of that screen when we are in test (usual case should not happen since we fail or pass the POST and either stops the animation.) - Updated the AlarmMapping to reflect the FILESYSTEM error change to SHASUM error.