Start of moving to a single controller

controller/createuser.php - moved from createuser.php
controller/editroles.php - moved from editrolls.php
controller/login.php - moved from login.php
controller/session.php - Session handling not handled in other parts of
controller goes here

createuser.php - moved to controller/createuser.php
editroles.php - moved to controller/editrolls.php 
login.php - moved to controller/login.php

index.php - the new universal controller, calls functions that will be
created in the various /controller files.