Admin tool update

Added command "/resetpassword" for resetting the passwords of user
accounts to simply 'password'.

Fixed a typo.

Some minor improvements to spectate UI, it now shows lock status of
players in vehicles as well as extra-data of held weapons/items and
holstered weapons/items.
Update to defence balancing

Increased hitpoints of all defence parts.

Lowered spawn rate of Fireworks (used to craft IEDs to destroy defences)
Improved car locks, fixed some samp bugs

Addressed the 'ninja-jack' bug (tapping space while hijacking from
passenger side kills the driver)

Addressed entering locked vehicles by moving some lock checking code and
variable to the server end.

Shifted all vehicle related code under OnPlayerStateChange from
Player/Core to Vehicle/Core.

Added a check to ensure locked vehicles that are occupied don't save
their lock status over restarts (to avoid players being locked out of
their vehicles)