Refactor path to ignore list, used in checking for terms-of-use agreement.

Refactor the code that sets an array of menu paths (URLs) to ignore. Normally when a user logs in and they have not agreed to the terms of use (TOU) they are sent to the TOU agreement form. There is a list of paths we ignore when checking whether to send the user to the YOU form in order to allow them to change their email and delete their account.

The ignore list is hardcoded and should be moved to the admin interface where the list is editable.