Define Database abstract class to manage connection (and other testing things)
	modified:   .htaccess
	modified:   library/Abstract_Singleton/Abstract_Singleton.php
	new file:   library/Database/Database.php
	modified:   public/index.php
Adding Options and IfModule to .htaccess
	modified:   .htaccess
	modified:   public/index.php
Test database connection in Index controller and eliminate typo
	modified:   application/controllers/Index/Index.php
	modified:   library/Database/Database.php