Move profile.php to account.php

For client account / profile updates
orm: Crash if accessing non-existent magic property
Add upgrade patch for 1.8.2 database changes
content: Add management for system templates
Allow registration to be turned off
Add intial content for system management templates
Redirect to originally-requested page on login

Instead of always showing the tickets page
Complete user registration
Better presentation of system templates
Implement staff registration / welcome email
Allow images in staff signature
Auto select timezone info for new staff
Fix success message after new staff created
Fix possible crash if no content for login banner