Added SoldCar event to AdminController.
PostReservation event added.
EditCar event added.
Refactored a bit of the DetailView and added error message showing.
Fixed typo.
Removed try/catch.
Refactored the code a bit.
Added comments to clearify what is which file.
Documentation added.
Changed the style to the main color: Red!
Placed the error message above the form for better readability.