Finished Settings class

Finished implementing and testing all methods in the Settings class. It
can now load settings, add new settings and update settings. By design
settings cannot be deleted
Comment in init.php
Updated MySQLWrapper

Changed MySQLWrapper delete() method to return true if the affected
rows are greater than 0 and the insert() method to return the id of the
inserted row
Created Page class

Created Page class with full implementations and testing of all methods
Created the Functions class

Created the Functions class and added array_flat() and print_r() methods
Changed MySQLWrapper

Changed update() method in MySQLWrapper to return true if the number of
rows affected is greater than 0
Added to Page class

Added remove_module_from_all_pages() method to the Page class
Created, implemented and tested Module class

Created the Module class, implemented all methods and tested them