- completed the implementaiton o the 'is dirty' flag to prevent reloading an object being modified. - added a protection against reading an uninitialized field that triggered a PHP 'notice' error.
- completed the implementaiton o the 'is dirty' flag to prevent reloading an object being modified.
- added a protection against reading an uninitialized field that triggered a PHP 'notice' error.

ucbpi/itop,ucbpi/itop,ucbpi/itop,ucbpi/itop,ucbpi/itop