add validation to some controllers.
Merge https://github.com/craigleehi/Android-Cruise-System
Merge https://github.com/craigleehi/Android-Cruise-System
Merge https://github.com/craigleehi/Android-Cruise-System
Merge https://github.com/craigleehi/Android-Cruise-System
Merge https://github.com/craigleehi/Android-Cruise-System
Merge https://github.com/craigleehi/Android-Cruise-System
render("@addinput");