* Adding mail verification during account registration
* Added new dist file option for mail verification
* Added account confirmation page using tokens
* Added mail class into user class for password resets
* Moved password reset template
* Adjusted account registration page
* Adjusted user class for email confirmation
Also fixed a bug with smarty_cache_key not being used properly if smarty
is disabled. Key still needs to be available even if caching is disabled
Addresses #330 and prepare the ticket for invitation only system.
* Added token type class
* Storing Token Type as ID not varchar
* Added new system to user class and fixed issues with it
* Started on mail verification process in user class
* Updated autoloader
* Updated change password template
Addresses #330
