a simpler web photo gallery
Provides a link so that users who have logged into zenphoto can logout.
Place a call on printUserLogout() where you want the logout link to appear.
Prints the logout link if the user is logged in.
This is for album passwords only, not admin users;
void printUserLogout( [string $before = ''], [string $after = ''], [bool $showLoginForm = false] )