Milestone 2.0

A minimal PHP5 only framework

• replace SGL_Manager with generic AppController using the Command pattern
• remove hard-coded $_aActionsMapping and drive workflow from config
• remove coupling between mgrs and templates
• replace all PEAR error handling with exceptions exclusively
• use native SPL interfaces instead of the ones we had to fake, ie, Observer, Iterator, etc
• remove php4 BC code
• switch to PhpDoctrine as ORM (ideally)
• rename 'classes' folder to 'logic', add 'exceptions' folder [for each module]
• use internal DateTime class instead of PEAR (http://derickrethans.nl/files/time-ffm2006.pdf)
• use internal SQLite for tmp storage, ie Config container
• use input* functions for input filtering (http://uk2.php.net/manual/en/function.filter-input.php)